Don't be unhappy if the people seem to laugh at your mistakes.

如果人们似乎在嘲笑你的错误，不要不高兴。

youdao

But don't be unhappy about that, mother dear.

但是不要因此闷闷不乐，亲爱的妈妈。

youdao

Please don't be late for class, or the teacher will be unhappy.

上课请不要迟到，否则老师会不高兴的。

youdao

The Wazirs, I don't think they will be unhappy about any harm to the Mehsud people because they do not like that the Mehsud's are dominating the region."

VOA: standard.2009.06.18

"As they become unhappy, they become like big bears -- you just don't want to be around them, " de Rond says.

CNN: Is workplace boredom 'the new stress?'