at the drop of a hat 1 . (非正式)立即;莫名其妙地,一有刺激就 drop one's aitches 2 . 省略单词开头的‘h’音(在英国常被认为是说话者社会阶层低下的标志) drop asleep 3 . 不知不觉睡着 drop the ball 4 . (北美,非正式)犯错,出错,做错事 drop a brick 5 . (英,非正式)失言;出言不慎 drop a clanger 6 . (英,非正式)做事出岔子,犯愚蠢的错误 drop a curtsy 7 . (英)行屈膝礼 drop dead 8 . 突然倒毙,猝死 drop a (或 the) dime on 9 . (美,非正式)向警方告发(某人) drop one's guard 10 . 丧失警惕,放弃戒备 drop a hint (或 drop hints) 11 . (装作漫不经心地)暗示 a drop in the ocean (或 in a bucket) 12 . 沧海一粟 drop someone a line 13 . 给…写短信(或便条) drop names1. drop me a line at the usual address.按老地址给我寄封短信。drop one's serve 14 . (网球)输掉发球局 drop a stitch 15 . 织漏一针 drop one's trousers 16 . (尤指在公共场所)故意让裤子掉下来 have the drop on 17 . (非正式)胜过(某人),占(某人的)上风 have had a drop too much 18 . (非正式)喝多了,喝醉了 drop back/behind 19 . 落后,被抛在后面 drop by/in 20 . 顺便拜访 drop into 21 . 顺便进入(某处),随意到(某处)看看 drop behind 22 . 落后 drop by 23 . 顺便访问:停下做短暂访问 drop off 24 . 睡着 drop out 25 . 退出参加:从比赛、俱乐部或学校退出 习惯用语 get the drop on 或 have the drop on 1 . 胜过某人:取得对…的明显优势