hear a pin drop 静得连针掉在地上也听得见

　　When Mike spoke at the meeting, you would hear a pin drop.

　　等Mike一讲话，会场鸦雀无声。

　　It was so quiet in the room that you could hear a pin drop.

　　房间里安静得连掉一根针的声音都听得见。

　　疯狂练习吧！