水中污染物的含量高到不可接受。

The water contains ___unacceptable levels of pollution.

我认为那种行为完全不可接受。

I find that kind of behavior completely ___unacceptable.

教师工会将最新的合同提议描述为不可接受的。

The teacher's union has described the latest contract offer as ___unacceptable.