water mouseWiktionary 原文构词拆分water词根/词干+mouse词根/词干演变路径（由近及远）英语继承自 ←中古英语 water mous词源说明From Middle English water mous, watermowse, equivalent to water + mouse.释义（英文）名词 Noun(zoology) Any of several species of rodents of the genus Hydromys, native to New Guinea and Australia, with strong hind legs and partially webbed toes.Xeromys myoides