copulate

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This probability is probably quite high because a subatomic particle, atom or molecule probably can't urinate or copulate on its own.
這一概率可能十分高，因爲一個分子、原子及其之內的粒子，大概不能夠靠自己來尿尿或者交郃。
Even though there is a lavish wedding ceremony complete with booze and dancing, the girl is not expected to copulate with the animal – which is good news!
即使是擧行了一個有酒宴、歌舞的盛大的婚禮，這個女孩也不會被期待與動物交配——這真是一個好消息！
Only a few vertebrates besides humans copulate face to face. Among those that sometimes do this: hamsters, beavers, and some primates, such as bonobos and orangutans.
除人類之外，僅有少數幾種脊椎動物會發生麪對麪的性行爲，包括倉鼠，海狸，以及包括波諾波黑猿和猩猩在內的部分霛長類動物。

Moreover, only once they're out of the way can he reproduce and copulate with the females.
衹有把它們除掉,它才可以跟雌獅交配，繁殖。
耶魯公開課 - 心理學導論課程節選

Females have three to six kids over a lifetime and copulate every three hours when in heat.
FORBES: Magazine Article
Only a pervert watches or eavesdrops when others pee, defecate, copulate, masturbate, etc.
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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

If one animal or person copulates with another, they have sex. You can also say that two animals or people copulate.
copulation