play it cool
[英语俚语]处事冷静，有节制，不轻易表态

We worried about his job, but he played it cool.

我们为他工作发愁，但他却无动于衷。

注解：
cool指冷冰冰，play指处理，操纵，驾驭某事；

to play it cool喻指处事冷静，沉着，从容。

bug someone
[美俗]使某人心烦

What is really bugging me now is that I don’t know how to do next.
现在，令我真正心烦是我不知道下一步该怎么办。

注解：
bug意指小虫子，令人心烦的东西；to bug someone系指小虫子使人心烦，喻指某事使人心烦。