Our next obstacle was a shallow pool of water about half a mile across.

下一个障碍是一片约半英里宽的浅水塘。

youdao

But a shallow gene pool can be a weakness, too.

但是，一个浅薄的基因库也可能是一个弱点。

youdao

But a shallow gene pool can be a weakness, too.

但是，一个浅薄的基因库也可能是一个弱点。

youdao