You want to wash aphids off with a strong current of water.

你想用一股强水流把蚜虫冲走。

An eddy is a large current of water moving in a circular motion.

涡流是指做圆周运动的大量水流。

Today, stone barriers are used to protect Raccoon Island from the currents of water.

如今，石头屏障被用来保护浣熊岛免受水流的侵袭。

Of aquatic animals, there are many self-fertilising hermaphrodites; but here the currents of water offer an obvious means for an occasional cross.

水生动物中， 有许多自花受精的雌雄同体； 但这里的水流为偶尔的交叉提供了明显的途径。

They swim up to the ocean surface to poo, and this poo can be spread in an eddy – a large current of water moving in a circular motion, like a giant whirlpool.

它们游到海面上排泄，而这些排泄物会在涡流中扩散开来——大量水流做圆周运动形成涡流，就像一个巨大的漩涡。