Its currents carry life for thousands of miles.海流帶著生物走過數千公里

thousands of數千的 ...

There are thousands of awnings on the sea beach.

沙灘上有許多遮陽篷。

It travels thousands of miles per second.

它一秒鐘能走幾千英里。

Their timing has ensured that they can make the most of feeding on a late-summerplankton bloom.這個時機能確保它們得以飽餐一頓，趕上浮游生物在夏季最后一次大量出現

ensure用法:既可用作及物動詞,也可用作不及物動詞。用作及物動詞時,可接名詞和that從句作賓語, that從句可用陳述語氣,也可用虛擬語氣。ensure也可接雙賓語,其間接賓語可以轉換為介詞for的賓語。用作及物動詞時,后可接介詞from〔against〕,表示“保護某人不受危害”。
Please ensure that all the lights are switched off at night.

夜間請務必將所有的燈關掉。

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

服下這些藥丸可保你睡一宿好覺。

feed on用 ... 喂養； 靠吃 ... 過活； 以 ... 為能源

Some crows feed on the corpse of dead animals.

一些烏鴉以動物的尸體為食。

Birds feed on nuts and berries in the winter.

鳥類靠堅果和漿果過冬。