parasitic
adjectivecaused by a parasite 寄生生物引起的 a parasitic disease/infection 寄生虫病／感染
living on another animal or plant and getting its food from it 寄生的；依附性的 a parasitic mite 寄生螨
- (disapproving)
(of a person 人 always relying on or benefiting from other people and giving nothing back 寄生虫似的；依赖他人的 She lives a parasitic existence, constantly borrowing money from her friends. 她过着寄生的生活，不断向朋友借钱。
Word Originearly 17th cent.: via Latin from Greek parasitikos, from parasitos ‘(person) eating at another's table’.