英语语法分析

Mating blackbirds will defend their territory against intruders.

乌鸫交配时会保护自己的地盘，不允许外来者侵入。

《牛津词典》

Now when they emerge in the spring from hibernation, the mating process begins.

现在，当它们从冬眠中醒来时，交配的过程就开始了。

Play can also provide practice in social behaviors needed for courtship and mating.

玩耍还可以为求爱和交配所需的社会行为提供练习。