prey on
phrasal verbprey on/upon somebody/something
- (of an animal or a bird) to hunt and kill another animal for food
捕食；猎获 - Hawks prey on rodents and small birds.
老鹰捕食啮齿动物和小鸟。
- Hawks prey on rodents and small birds.
- to harm somebody who is weaker than you, or make use of them in a dishonest way to get what you want
欺凌，坑骗，敲诈（弱者） - Bogus social workers have been preying on old people living alone.
冒牌社会福利工作者不断坑害独居老人。
- Bogus social workers have been preying on old people living alone.