a shape like a curve or circle made by a line curving right round 环形；环状物；圆圈 The road went in a huge loop around the lake. 那条路环湖绕了一个大圈。 Duclair is a small town on a loop of the River Seine. 迪克莱尔是塞纳河河曲地区的一座小城。
Oxford Collocations Dictionaryadjective- continuous
- endless
- closed
- …
- form
- make
- in a/the loop
- through a/the loop
a piece of rope, wire, etc. in the shape of a curve or circle （绳、电线等的）环，圈 
He tied a loop of rope around his arm. 他在手臂上用绳子系了一个圈。 Make a loop in the string. 在绳子上打个圈。 a belt loop (= on trousers, etc. for holding a belt in place) 皮带襻
Oxford Collocations Dictionaryadjective- continuous
- endless
- closed
- …
- form
- make
- in a/the loop
- through a/the loop
a long, narrow piece of film or tape on which the pictures and sound are repeated continuously 循环电影胶片；循环音像磁带 Extra ExamplesThe audio tape runs in a continuous loop lasting thirty minutes. 录音带一圈一圈连续转半个小时。 positive and negative feedback loops 正、负反馈回路
Oxford Collocations Dictionaryadjective- continuous
- endless
- closed
- …
- form
- make
- in a/the loop
- through a/the loop
- (
computing 计算机 a set of instructions that is repeated again and again until a particular condition is satisfied 循环；回路；（程序中）一套重复的指令 Oxford Collocations Dictionaryadjective- continuous
- endless
- closed
- …
- form
- make
- in a/the loop
- through a/the loop
a complete circuit for electrical current 环路；回线；回路 Oxford Collocations Dictionaryadjective- continuous
- endless
- closed
- …
- form
- make
- in a/the loop
- through a/the loop
- (British English)
a railway line or road that leaves the main track or road and then joins it again （铁道或公路的）环线 - the Loop(US English, informal)
the business centre of the US city of Chicago 大环（指美国芝加哥市的商业中心）
Word Originlate Middle English: of unknown origin; compare with Scottish Gaelic lùb ‘loop, bend’.
Idioms
in the loop | out of the loop
- (informal)
part of a group of people that is dealing with something important; not part of this group 属（处理要务的）圈内／圈外人士 A lot of people want to be in the loop on this operation. 很多人都想参与这次行动。 Lawton had gradually been cut out of the loop on legal reviews. 劳顿逐渐被排除在法律审查的圈子之外。
knock/throw somebody for a loop
- (North American English, informal)
to shock or surprise somebody 使震惊；使惊讶 The result of the election knocked most people for a loop. 选举的结果使大多数人感到震惊。