最好不要漂英文

Pretty girls, not good.

You'd better not provoke the pretty girl.漂亮女生，不好惹。可以理解为最好不要招惹漂亮女生吧。

你最好别灰心用英文可以说:You'd better not lose heart

最好:best,first-rate,finest,had better,……

别灰心:lose heart,be discouraged……

Cheer Up 使振奋起来；Don't give up 不要放弃；Don't lose your heart 不要丧失信心。

Pretty female students are not easy to be trifled with!