drop like flies

verb

(simile, of members of a group, especially soldiers) To die en masse, one after the other.

During the heatwave, people were dropping like flies.

意味（1）

(simile, of members of a group, especially soldiers) To die en masse, one after the other.

Seymour: Audrey, quick! We've got to do an emergency [flower] arrangement.

[…]

Mr. Mushnik: The Shivas are our most important funereal account. A big, enormous family, they're dropping off like flies!