excretory organˈekskrɪˌtɔ:ri:ˈɔ:ɡən短语⁷⁶⁷⁰² 基本英英近义反义例句 排泄器官 Noun: an organ that separates waste substances from the blood and discharges them近义词urinary organ泌尿器 A tubular excretory organ in many invertebrates, such as mollusks and earthworms. 主要以蚯蚓为食并大量繁殖的动物。 hotdic