A folding or doubling of string, rope, etc. forming a ring or eye through which a cord may be run; a noose.

线圈；绳圈。

A ring-shaped formation in a line, stream, road, etc.

环形(线河,流道路等)。

Maneuver in which a plane describe a vertical loop.

【空】翻圈飞行。

The main business section or the most congested part of a city.

最繁华热闹的市区。

Lippes loop.

子宫环。

To make a loop on or about; to furnish with, or secure with, loops.

环绕；装环；以环结紧。

To form a loop.

打圈。

To execute a loop in an airplane.

做环状飞行。