n. 圈,环;[医]宫内避孕环;回路;弯曲部分
vt.& vi. (使)成环,(使)成圈;以环连结;使翻筋斗
It´s a circle, a loop.
它是一个圆,一个循环。
These things are usually stamped with the recycling loop.
这些东西通常都有盖有回收循环标志。
This closed loop is part of a water-supply system in which "every drop counts".
这个封闭循环是供水系统的一部分,“滴滴珍贵”。
Looking from a distance like a gigantic arch, it is a continuous loop, a kind of square doughnut.
从远处看像一座巨大的拱门,它是一个连续的环,像一种方形面包圈。
Another module continued to pump coolant through a separate loop, but astronauts had to power down non-essential equipment to prevent overheating.
另一个模块继续通过一个单独的循环泵入冷却剂,但宇航员不得不关掉不必要的设备以防止过热。