以上来源于: WordNet
Tell them about the mechanics of sexual intercourse.
告诉他们关于性交流的技巧。
He tells her about conception, sexual intercourse, sperms and eggs.
他告诉她关于怀孕，性交以及精子和卵子的事。
If a couple practiced temperate, moderate, and more or less dispassionate acts of sexual intercourse, they could be said to remain chaste -- a married couple, of course.
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