1 N-COUNT (尤指固定地毯的)大头钉,平头钉 A tack is a short nail with a broad, flat head, especially one that is used for fastening carpets to the floor. to get down to brass tacks→see: brass (尤指固定地毯的)大头钉,平头钉
3 VERB 用大头钉(或图钉)固定 If you tack something to a surface, you pin it there with tacks or drawing pins. 用大头钉(或图钉)固定
SYN fasten, fix, attach, pin
4 N-SING 方法;策略;思路 If you change tack or try a different tack, you try a different method for dealing with a situation. 方法;策略;思路
5 V-ERG (使)(船只)曲折航行,蜿蜒航行 If a sailing boat is tacking or if the people in it tack it, it is sailing towards a particular point in a series of sideways movements rather than in a straight line. (使)(船只)曲折航行,蜿蜒航行 [Also VERB n preposition/adverb]
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We were tacking fairly close inshore. [VERB]
我们沿着近海岸曲折航行。
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Our last trip involved a coastal passage, tacking east against wind and current. [VERB adv./prep.]
我们上次旅行时曾经沿着海岸,逆着风浪向东曲折航行。
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The helmsman could tack the boat singlehanded. [VERB noun]
舵手独自一人就能变换航向。
SYN change course, swerve, change direction, go about
6 VERB (用大针脚)粗缝,暂时缝上 If you tack pieces of material together, you sew them together with big, loose stitches in order to hold them firmly or check that they fit, before sewing them properly. (用大针脚)粗缝,暂时缝上
SYN stitch, sew, hem, bind
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