1
- a slope or inclined plane for joining two different levels, as at the entrance or between floors of a building（建筑物入口处或不同层面间的）斜面, 斜坡：
a wheelchair ramp.
轮椅用斜坡。
1.1
- a movable set of steps for entering or leaving an aircraft（供上下飞机使用的）活动舷梯, 轻便梯。
1.2
- Brit. a transverse ridge in a road to control the speed of vehicles〈英〉（路面上为强制车辆减速而采用的）小凸面。
1.3
- N. Amer. an inclined slip road leading on to or off a main road or motorway〈北美〉（大道或高速公路的）（上、下）匝道：
an exit ramp.
驶出匝道。
2
- an upward bend in a stair rail（楼梯扶手的）弯子, 弯斜段。
3
- an electrical waveform in which the voltage increases or decreases linearly with time斜坡波形, 锯齿波形。
4
- Brit. informal a swindle or racket, especially one involving a fraudulent increase of the price of a share〈英, 非正式〉诈骗, 敲诈（尤指涉及股价诈涨的诈骗或敲诈）。
- ORIGIN: see sense 4 of the verb.
1
- with obj. provide or build (something) with a ramp为…提供（或建造）斜面（或斜坡）。
2
- no obj. archaic (of an animal) rear up on its hind legs in a threatening posture〈古〉（动物）前肢腾空而起。
2.1
- with adverbial of direction rush about violently or uncontrollably横冲直撞, 暴跳。
2.2
- with adverbial of direction(of a plant) grow or climb luxuriantly（植物）蔓生, 蔓延：
ivy ramped over the flower beds.
常春藤疯长到花坛上。
3
- no obj.(of an electrical waveform) increase or decrease voltage linearly with time（电子波形）电压随时间增减。
4
- no obj. [usu. as noun ramping] Brit. purchase shares or other securities in order to fraudulently raise their price〈英〉（为哄抬股价）购进股票（或证券）。
- ORIGIN: late 20th cent.: of unknown origin; a 19th-cent. slang use of the term was 'rob, swindle'.
词源
Middle English （as a verb in the sense 'rear up', also used as a heraldic term）： from Old French ramper 'creep, crawl', of unknown origin. Sense 1 of the noun dates from the late 18th cent.
短语动词
ramp something up （或ramp up）
- (especially in reference to the production of goods) increase or cause to increase in amount（尤指商品生产）（使）扩大生产：
they ramped up production to meet booming demand.
他们扩大生产以满足迅速增长的需求。