loop
noun [ C ] uk/luːp/ us/luːp/
圆圈，环形
the curved shape made when something long and thin, such as a piece of string, bends until one part of it nearly touches or crosses another part of it
belt loops 腰带
a loop of string 绳套
the loop of the river 河弯，河套
in/on a loop 循环，循环方式
If something runs in a loop, or is on a loop, it runs continuously, so that the same things are repeated again and again.
The tape ran in a continuous loop, repeating the same songs over and over. 这盘磁带处于循环播放状态，反反复复地播放那几首歌曲。
（一种）宫内避孕器
a type of IUD
Idioms
be in the loop/be out of the loopidiom informal （不）是消息灵通人士;（不）是圈内人
to have or not have the special knowledge or power that belongs to a particular group of people
You can tell she's in the loop. She always knows about policy decisions before the rest of us. 她很明显是圈内人。她总是在我们所有人之前就知道政策决定。
I've been out of the loop since I changed jobs. I didn't realize Wendy and Bob had got engaged. 我换工作之后一直消息闭塞。我还不知道温迪和鲍勃已经订婚了呢。
knock/throw someone for a loopidiom US informal 使人心烦;使大为惊讶
If something that happens knocks you for a loop, it upsets or confuses you because you do not expect it.
He knocked me for a loop when he said he was quitting his job. 他说他要辞职的时候吓了我一跳。
loop
verb [ I or T, usually + adv/prep ] uk/luːp/ us/luːp/
缠绕;弯曲
to make a loop or curve
Loop the rope over the bar. 用绳子在栏杆上缠一圈。
Turn left where the road loops round the farm buildings. 在这条路绕过农场房屋的地方向左转。
Idiom
loop the loopidiom 盘旋，绕圈飞行
to fly in the shape of a loop in the sky