1. 寄生虫；寄生物
A parasite is a small animal or plant that lives on or inside a larger animal or plant, and gets its food from it.
2. 不劳而获者；寄生虫
If you disapprove of someone because you think that they get money or other things from other people but do not do anything in return, you can call them a parasite .
名词寄生虫；寄生物；寄生植物；依赖他人过活者网络食客；寄生侦察虫；寄生生物