to feed off
[phrase form: feed]
01
从...获取力量, 以...为食
to gain strength from a specific source or influence
例子
Rumors feed off people's curiosity and spread quickly through the office.
谣言从人们的好奇心中汲取养分，并在办公室里迅速传播。
The mob 's anger fed off the escalating tensions in the community.
暴徒的愤怒源于社区中不断升级的紧张局势。
02
以...为食, 靠...生存
to consume a particular type of food regularly to grow and stay alive
例子
Cows feed off grass in the pastures every day.
奶牛每天在牧场上以草为食。
Mosquitoes feed off the blood of humans and animals.
蚊子以人类和动物的血液为食。
