leeches

n.蛭类；水蛭；蚂蟥

名词leech的复数形式.

Throughout the 18th and 19th centuries, using leeches for medical reasons was very popular. 中世纪欧洲的医生用水蛭治疗他们的病人。

With the new fossil, researchers can now identify the animals as part of the annelid worm family, which also includes modern sea mice, earthworms and leeches. 因为这个新的化石，研究人员现在可以鉴别出该动物属于环节虫属，这类动物中包括现代的海毛虫，蚯蚓和水蛭。