The scientists know very little about them.科學家們對它們了解甚少

know about知道； 了解； 聽說過有關 ... 的情況

I feel that I know about the value of my own work.

我覺得我知道自己工作的價值。

I'd love to know about the plan.

我想知道這個計劃。

It is about getting the samples out,我們需要取出樣品

get sth out把...取出

How am I going to get out of this jam?

我怎樣才能擺脫困境呢？

He could not get it out of his head.

他無法忘掉這件事。

This is where their new drugs come from.這就是新藥物的來源地

come from來自； 起源于

Correct ideas come from social practice.

正確的思想來自社會實踐。

We heard clink come from that room.

我們聽到那個屋子傳來叮當聲