| [/luːp; lup/] n 用法:
1 (a) shape produced by a curve crossing itself （曲线自绕所成的）环形, 圈:
a double loop like a figure eight 像8字的双圈 *
handwriting with loops on many of the letters 把很多字母都写得带圈的笔体.
(b) any path or pattern shaped roughly like this 环形的轨迹或图案:
The plane flew round and round in wideloops. 飞机翻著大圈一圈一圈地飞行.
(C) length of string, wire, etc in such a shape, usu fastened at the crossing （绳、 金属线等绕成的）环, 结:
a loop of ribbon to carry the package by 包裹上供手提的缎带套. 用法:
2 complete circuit for electric current 环形线路. 用法:
3 (computing 计) set of instructions carried out repeatedly until some specified condition is satisfied 循环. 用法:
4 contraceptive coil 避孕环. loop 2
v 用法:
1 [I, Tn, Tn.pr, Tn.p] form or bend (sth) into a loop or loops 使（某物）成环或圈:
strings of lanterns looping/looped between the branches of the trees 绕树穿枝回环成串的灯笼 *
looped threads 打圈的线 *
loop (up) a rope 把绳子挽成圈. 用法:
2 [Tn, Tn.pr, Tn.p] fasten or join (sth) with a loop or loops 打环扣系住（某物）; 缠绕:
loop the rope round the post 把绳子缠绕在柱子上 *
loop the curtains back 卷起帘子. 用法:
3 (idm 习语) ,loop the `loop (of an aircraft) fly in a complete circle vertically; (of a pilot) cause an aircraft to do this （指飞行器或驾驶员）翻圈飞行, 翻跟头飞行. |