1A long narrow hilltop, mountain range, or watershed.

1. 1.1 The line or edge formed where the two sloping sides of a roof meet at the top.
   屋脊
   Example sentencesExamples

   • These are long strips of open, screened vent, typically made from vinyl, that are installed along the ridge of the roof.
   • The ridge of the roof is a water channel from which water overflows onto the thin roofing membrane of stone and glass.
   • During my visit I saw that the proposed conservatory would be directly below the main living room window, although the ridge of the roof would not extend as far upwards as the window ledge.
   • The continuous surface helped by removing the requirement for distinctions between wall and roof, eliminating all need for ridges, eaves and even changes of plane.
   • The buildings are usually gabled, with rows of tiles along the ridges of the roofs.
   • This has turned out to be a problem, because the attic is vented at the roof ridge, and the vent screen becomes clogged with dryer lint.
   • Back-to-back classrooms share a wall that runs under the roof ridge, and have either north or south-facing operable windows.
   • Here, the Normans do have a thing or two to learn, because many of the thatched cottages have a row of irises planted along the ridge of the roof.
   • Even the plainer lodges are likely to have additions such as finials and cresting on the ridge of the roof.
   • These gutter joists, as well as those constituting the ridges of the rooflet have a descent of 6.
   • The ridge of the upper-floor ceiling is offset from the central ridge of the gable roof above.
   • Under the roof ridge there are cross planks that hold various secrets.
   • We view the vacant alternate site of the inner compound and catch our first glimpse of the ridge and the roof finials of the main sanctuary beyond the fences.
   • In church building, for instance, decorative features using cast iron could include the ridge along the roof as well as gates and grilles.
   • Six stainless steel flues vent forge smoke through the corrugated iron roof which is cut away at the ridge for a skylight that runs the length of the studio.
   • The ridges of the roofs of the four new homes ended up a metre higher than in the original plans passed by Kennet District Council in 2000.
   • There was no apparent evidence of any leakage through the roof slopes, ridge, hip, valley or chimney stack intersections.
   • Roof ridges had to be carefully supported in their original positions to retain the roof's authentic curvature.
   • He took the cigarette out, staring at the roof ridge.
   • Metal roofing is applied in approximately 3-foot-wide vertical pieces that stretch from the eaves to the ridge.

   Synonyms

   summit, peak, pinnacle, crest, crown, brow, brink, head, highest part, highest point, mountaintop, tip, apex, vertex, acme, apogee
2. 1.2Meteorology An elongated region of high atmospheric pressure.
   〔气象〕高压脊
   Example sentencesExamples

   • A week of sunshine and showers followed as a ridge of high pressure dominated.
   • A ridge is an elongated area of high atmospheric pressure.
   • But today the pattern changed and the hoped for high pressure ridge from Bermuda is beginning to build and it looks stronger every day.
   • In between our fronts are ridges of high pressure.
   • The first is the ridge of high pressure which exists between depressions moving from west to east steered by the upper-level jet stream.
3. 1.3 A narrow raised band running along or across a surface.
   脊状突起带；凸纹
   buff your nails in order to smooth ridges

   打磨指甲，把纹路磨平。

   Example sentencesExamples

   • Nails are smooth now, ridges gone, white flecks have nearly gone.
   • Well-developed longitudinal ridges are consistently present and prominent on both surfaces of the tooth.
   • The distal half of the shaft has a faint longitudinal ridge running along the midline of the anterior face.
   • Transverse terrace ridges cross both the axis and pleural region.
   • It shows a band of enamel on one of the sides, and smooth ridges run along the surface.
   • Hard-wearing though they are, with the passing of time these tiles became slightly concave, so that the pointing lines formed raised ridges.
   • It takes practice to judge how hard to press - too firmly, and you scoop off compound nearly to the tape; too lightly and you leave ridges at the edge.
   • While it is mostly smooth plastic, there are ridges molded into the running surface.
   • Painting will accentuate, not hide, any ridges and edges that you leave.
   • Longitudinal striations are accentuated ridges in the nail surface that can occur as a normal part of the aging process.
   • The apical ectodermal ridge consists of closely packed columnar epithelial cells, which are linked by extensive gap junctions.
   • While the ventral face of the centrum generally is covered with an undulating pattern of faint ridges, the lateral surfaces are more or less smooth.
   • Tiny ridges, bumps and cracks visible on their surfaces are magnified a thousand fold.
   • The varnish smoothes out the gaps and ridges on the surface of the teeth and prevents the build-up of plaque, which causes decay.
   • Three scars ran over the smooth skin, rough ridges through his cheek and under his eye and up the side of his face.
   • Also, since this sauce is a little thinner than a béchamel, use a pasta with ridges, in order to hold on to the sauce.
   • Using pipe insulation, carpet padding and polyurethane fill, he has raised ridges and mounds within his paint surfaces.
   • Nearly the entire Unioninae subfamily has smooth surfaces with the exception of ridges formed from the concentric growth rings.
   • The fossil tubes have flanges, concentric growth lines and wavy longitudinal ridges.
   • The scapula is a tall narrow blade with a vertical ridge on its external surface.

   Synonyms

   cliff, promontory, headland, crag, bank, slope, height, peak, escarpment, scarp, precipice, rock face, overhang
4. 1.4 A raised strip of arable land, especially (in medieval open fields) one of a set separated by furrows.
   垄，埂
   Example sentencesExamples

   • Here also you've got the village boundary bank, and areas of ridge and furrow.
   • Our journey opened out with a white gate to pastures, shaded ridge and furrow and sight of Kilburn's White Horse from an aspect that flatters its awkward shape.
   • At Flint Hall there is a cricket pitch which retains its ridge and furrow ripples, painful for fielders.
   • The extensive sets of ridges were clearly constructed and used by Oneota cultivators during the first half of the fifteenth century A.D., during the Pammel Creek phase.
   • The 70-acre grassed area has important historical and archaeological features including ridges and furrows of medieval cultivation as well as a rich store of flora and fauna.
   • Nonetheless, cultivation ridges show that crops were grown here, and the site is very substantial for a seasonal camp; thus, it may well have been occupied year round.
   • Unlike Derwenthorpe there would be no risk of flooding, no destruction of ancient ridge and furrow meadows and hedgerows and no damage to wildlife habitats.
   • Scientists in Minnesota are looking at how ridge tillage affects pesticide leaching.
   • Mr Canham said: ‘You can see a system of ridges and furrows and there could have been two or three farm buildings on the site.’
   • The land is flat, sometimes undulating as old ridge and furrow pasture; the route passes near a trig point on a rare hillock 250 ft high.
   • Hoe drills, especially those with wider row spacing, can plant seed deeper because they can build a ridge and plant in the furrow.
   • Guarded or shielded sweeps are very useful because they permit shallow cultivation of a wide strip without forming ridges.
   • The field to the south shows undulating medieval ridge and furrow.
   • Small clusters of stalk-like asparagus spears protrude from the top of long ridges of slightly raised earth.
   • Along one side is the lovely green ripple of ridge and furrow pasture, unfortunately a portion has been ploughed.
   • Avoid planting on ridges where rows can be exposed to dry soil conditions and wind which may erode the soil, exposing the seed and making the hill too small to cover new tubers.
   • Applying one to two inches of water after the seed has been planted will cause soil particles to dislodge and move from the tops of soil ridges into the seed furrow.
   • At Eulrich, he excavated four test units, two of which cross-sectioned apparent sets of ridges and furrows.
   • As a result, the yield potentials of such soils are usually higher under no-till or ridge tillage than under moldboard plowing.
   • Making ridge and furrow system in the row crops will also facilitate better conservation of the subsequent rains and promote better growth of the crops.

   Synonyms

   bank, mound, earthwork, causeway, barrier, levee, dam, dyke

1Mark with or form into narrow raised bands.

海滩上的沙脊。

1. 1.1no object (of a surface) form into or rise up as a narrow raised band.
   （表面）成脊状，起皱
   the crust of the earth ridged

   地壳起皱成脊。

   Example sentencesExamples

   • But for the rest, and that's close on half the top 20, ambition now revolves around grasping the coat-tails of the boom-boom bandwagon and hanging on for dear life as it rattles along a road ridged around a ravine.
   • A disruption of the distal matrix may cause problems with the deeper layers, resulting in ridging or splitting.
2. 1.2 Form (arable land) into raised strips separated by furrows.
   翻（耕地）作垄
   a field plowed in narrow stretches that are ridged up slightly

   被翻成有微微隆起窄垄的耕地。

   Example sentencesExamples

   • Somewhat poorly drained soils, such as Blount, Crosby and Fincastle, can be no-tilled or ridged with careful management.
   • Oneota populations in that locality practiced the construction and maintenance of a system of ridged fields.
   • Gartner has suggested that the fields have a Late Woodland Effigy Mound affiliation and has noted similar possible affiliations for two other ridged field sites in the Wisconsin Valley.
   • While no evidence exists for the Fred Edwards site inhabitants using dispersed fields, the preceding Effigy Mound peoples included ridged fields in their horticultural practices.
   • We ridge up heavy soils for planting sweet potatoes, but on the preferred sandy or sandy loam soil, we prepare broad beds raised four to six inches.
   • The land was quiet and pleasant, with teasels, cowslips, bluebells, and dark soil ridged for spuds or glowing with oil seed rape.
   • Most distinctive about the La Crosse Oneota culture is the presence of several sites with extensive ridged fields for cultivation of floodplain settings with rich but potentially wet organic soils.
   • Recent work by Lensink and Gartner documented the remnants of what appears to be a Mill Creek ridged field on a high terrace.
   • So far, maize has not been identified in flotation samples from the Robinson site, but Schumacher and Titus's report of a ridged field suggests that horticultural activities were carried out there.
   • Although no known ridged field systems are associated with the Pammel Creek site, agriculture is well represented by corn, beans, and squash in the botanical assemblage from the site.
   • Consequently, they long ago developed techniques, such as ridging their fields, to conserve water.