At the first sign of trouble, schooling fish swim as close together as they can get.

一旦发现危险的迹象，鱼群就会尽可能地游近彼此。

youdao

At the first sign of trouble, schooling fish swim as close together as they can get.

一旦发现危险的迹象，鱼群就会尽可能地游近彼此。

youdao