1. （大多数人）认同的，认可的
    Acceptable activities and situations are those that most people approve of or consider to be normal.

    e.g. It is becoming more acceptable for women to drink alcohol...
           女性喝酒渐渐被人们接受。
    e.g. The air pollution exceeds most acceptable levels by 10 times or more.
           大气污染程度超出了普遍认可的标准10倍或更多。

2. 可接受的;值得接受的
    If something is acceptable to someone, they agree to consider it, use it, or allow it to happen.

acceptable

    e.g. They have thrashed out a compromise formula acceptable to Moscow...
           他们经过讨论达成了一项莫斯科可以接受的折中方案。
    e.g. They recently failed to negotiate a mutually acceptable new contract.
           他们最近未能谈成一个双方都满意的新合同。

3. 尚可的；还可以的
    If you describe something as acceptable, you mean that it is good enough or fairly good.

    e.g. On the far side of the street was a restaurant that looked acceptable...
           远处街边有一家饭店看起来还可以。
    e.g. We've made an acceptable start, but it could've been better.
           我们起了一个好头，但本可以更好一些的。