Its currents carry life for thousands of miles.海流带着生物走过数千公里

thousands of数千的 ...

There are thousands of awnings on the sea beach.

沙滩上有许多遮阳篷。

It travels thousands of miles per second.

它一秒钟能走几千英里。

Their timing has ensured that they can make the most of feeding on a late-summerplankton bloom.这个时机能确保它们得以饱餐一顿，赶上浮游生物在夏季最后一次大量出现

ensure用法:既可用作及物动词,也可用作不及物动词。用作及物动词时,可接名词和that从句作宾语, that从句可用陈述语气,也可用虚拟语气。ensure也可接双宾语,其间接宾语可以转换为介词for的宾语。用作及物动词时,后可接介词from〔against〕,表示“保护某人不受危害”。
Please ensure that all the lights are switched off at night.

夜间请务必将所有的灯关掉。

These pills should ensure you a good night's sleep.

服下这些药丸可保你睡一宿好觉。

feed on用 ... 喂养； 靠吃 ... 过活； 以 ... 为能源

Some crows feed on the corpse of dead animals.

一些乌鸦以动物的尸体为食。

Birds feed on nuts and berries in the winter.

鸟类靠坚果和浆果过冬。