Senses
寄生虫/ 寄生蟲 parasite
an organism that lives in or on another organism and derives nutrients from it; also refers to invertebrates like roundworms, lice, and fleas
寄生虫/ 寄生蟲 freeloader
(figurative) a person who is capable of working but instead chooses to live by exploiting or relying on others; a social parasite