“孵蛋的”造句

该是母鸡孵蛋的时候了.
It is time for hens to brood.

是母鸡孵蛋的时候了.
It's a time for hens to brood.

这化石显示,早在鸟类出现之前,孵蛋的行为就已经演化出来.
The fossil demonstrates that brooding behavior evolved long before there were birds.

• #孵蛋的