Bill was not happy about the delay of the flight, and neither was I.

比尔对航班延误感到不高兴，我也不高兴。

youdao

If there's anything you're not happy about, come and ask.

你如果有什么不满意的，来说一声。

《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

Note that it is not about helping ourselves and others become happy.

注意这不是关于帮助我们自己和他人变得幸福。

哈佛公开课 - 幸福课课程节选

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

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?

Apple didn't respond to requests for comment, but it's certainly not happy about Allegra's work.

FORBES: Magazine Article