they do it by truns like human beings我想问这句话怎么解释还有一句If one of them dies,the other one becomes very sad and quiet for the rest of its life and sometimes it dies,too.

they do it by truns like human beings我想问这句话怎么解释还有一句If one of them dies,the other one becomes very sad and quiet for the rest of its life and sometimes it dies,too.
they do it by truns like human beings
我想问这句话怎么解释
还有一句
If one of them dies,the other one becomes very sad and quiet for the rest of its life and sometimes it dies,too.

they do it by truns like human beings我想问这句话怎么解释还有一句If one of them dies,the other one becomes very sad and quiet for the rest of its life and sometimes it dies,too.
他们在进化成人之前就这样做了.
如果其中一个死了,另一个在余生就会非常悲伤沉默,有时也会随同伴死去.