吸烟越来越不被社会所接受。

Smoking is less and less socially ___acceptable.

孩子们需要学习哪些行为在道德和社会层面是可接受的。

Children need to learn what is morally and socially ___acceptable.

在正式的商业会议上，如此随意的着装是不可接受的。

Such casual attire is not ___acceptable in a formal business meeting.