讲解文本：

hear a pin drop 听见针的掉落(形容安静，通常因为吃惊或兴奋)

It was so quiet. You could hear a pin drop.

当时安静极了，连针掉落也听得见。

There was no one in the house. You could even hear a pin drop.

房子里空无一人，安静得连针掉落都听得见。