Whales take twenty-four hours to copulate.

鲸用二十四小时来交配。

《柯林斯英汉双解大词典》

During the time she is paired to a male, the female allows no other males to copulate with her.

雌性与一雄性配对时，雌性不允许其他雄性与其交配。

《柯林斯英汉双解大词典》

I HAD never given much thought to how dolphins copulate, much less seen them doing it.

我从来没有如此关注过海豚的繁殖，因为几乎看不到它们繁殖的过程。

youdao

Scientists toil behind the scenes provide the rich holiday makers with an exciting (but actually closely monitored and regulated) experience, populated by robots that are almost entirely designed for humans to kill and copulate with.

ENGADGET: blogger-avatar

Females have three to six kids over a lifetime and copulate every three hours when in heat.

FORBES: Magazine Article