I'm not entirely happy about the proposal.

我对这个建议并不十分满意。

《牛津词典》

I am not altogether happy about the decision.

我对这个决定并不十分满意。

《牛津词典》

If you are not happy about a repair, go back and complain.

如果你对修理不满意，就回去投诉。

《柯林斯英汉双解大词典》

Sometimes he seems to be saying, "I'm not happy about anything, but what are you going to do about it?"

VOA: special.2010.01.17

You will find this pattern very useful anytime you're not feeling happy about something and you want to express yourself.

你会发现，当你因为什么事感到低落，你想表达自己的感觉时，这个句型特别有用。

I get so upset 课堂 - SpeakingMax英语口语达人

When we talk about p orbitals the phase of the orbital becomes important once we talk about bonding, which hopefully you were happy to hear at the beginning of class we will get to soon.

对于ｐ轨道,当我们讨论到成键时，轨道的相位就变得非常重要了,这个我们马上就要讲到了。

麻省理工公开课 - 化学原理课程节选

What they are not happy about is remarks on Sunday by Minister of Wildlife SM Chandrasena.

BBC: Sri Lanka wildlife groups boycott elephant census

You can imagine that Microsoft and Skype are not happy about these heated discussions.

FORBES: Will Microsoft's Changes To The Architecture Of Skype Make It Easier To Snoop?

Don't expect the neighbors always to be happy about hundreds of gawkers roaming around.

FORBES: Home Improvement