adverb · to engage in an illicit, immoral, or unauthorized sexual relationship

他们之间乱搞，导致了家庭破裂。

to act recklessly, mismanage, or create a mess of things

如果你没有经验，就不要在这里乱搞。

to engage in promiscuous behavior or have illicit sexual relations

他在外面乱搞的事情最后还是被发现了。