could hear a pin drop 鸦雀无声

“鸦雀无声”，汉语成语，字面意思是“连乌鸦麻雀的声音都没有（not even a crow or sparrow can be heard）”，形容非常静。可以翻译为“utterly quiet; not a sound could be heard”。与英文惯用语“could hear a pin drop”意思相近，用来形容绝对的寂静（absolute silence）。

例句：

老板大发脾气后，会议室里鸦雀无声。

After the boss's outburst, the meeting room was so quiet you could hear a pin drop.

他说完这句话之后，新闻发布室里鸦雀无声。

You could have heard a pin drop in the press briefing room after he said that.