drop like flies
US /drɑp laɪk flaɪz/
UK /drɑp laɪk flaɪz/

1.
成批倒下, 大量死亡
to fall ill, die, or fail in large numbers
:
•
During the flu season, employees started to drop like flies.
流感季节期间,员工们开始成批倒下。
•
The small businesses in the area started to drop like flies after the new superstore opened.
新大型超市开业后,该地区的小企业开始成批倒闭。