性行为 meaning in English

sex instinct act; sexual behaviour; sexuality erotism

Do you think sexual act outside marriage is wrong ?
你认为婚外性行为是不对的吗？
Hence, whereas the other animals take delight in the objects of the senses only as ordered to food and sex .
因此，其他动物以感官对象为乐，只是为了填饱肚子和性行为。
The severe form of the syndrome may include the most extreme forms of self-injurious, repetitive, highly unusual and aggressive behaviours .
孤独症综合症的严重表现形成包括极端形式的自残行为，反复的离奇与攻击性行为。
Aggressive behavior during exercise and its control
体育运动中的攻击性行为与控制
Class implements the following persistence behavior
类可实现以下持久性行为：

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