We risk upsetting the ecological balance of the area.

　　我們有可能破壞這個地區(qū)的生態(tài)平衡。

　　Why did you have to go and upset your mother like that?

　　你干嗎非得讓你母親那樣傷心呢？

　　Naturally, I get upset when things go wrong.

　　事情出了錯，我當(dāng)然就會很煩。