1. C 圈，环；环状物　a round shape made by sth like string or rope
2. C 回路，循环　set of instructions carried out repeatedly until some specified condition is satisfied

　She made a loop in the string.　她用绳子打了个圈。
　The plane flew round and round in wide loops.　飞机兜着大圈子，飞了一圈又一圈。
　The road makes a wide loop around the lake.　这条路环湖绕一个大圈子。

　vt. & vi.（使）成环或圈 form or bend into a loop or loops; supply with a loop or loops

　～ thing together　用环把东西系在一起
　～ up　把…卷起
　～ around　环绕在…上
　～ into　滴溜溜地扔进

　He looped a rope and tied the ends.　他把绳子打成一个圈并把两头连起来。
　They looped the thing together.　他们用环将那些东西系在一起。
　Loop that end of the rope through this and make a knot with it.　把绳子的那一端从这里穿过，然后打个结。
　Loop the curtains up.　把窗帘卷起来。

 ♣ loop around　(v.+prep.)
　围以环或圈　form or bend around a loop or loops
　The brook loops around the farm.　小河绕农场流过。
　Loop the rope around the pole.　把绳子环绕在柱子上。
　Loop the rope around the gate.　用绳子把门系牢。

　［同义词］ n. circle, hoop, ring
　［词源］中古英语loup（圈，环）