| 单词 | 泄殖腔 |
| 释义 | 〔cloaca〕The posterior part of the intestinal tract in various invertebrates.泄殖腔：各种无脊椎动物内肠道的后部分〔cloaca〕The common cavity into which the intestinal, genital, and urinary tracts open in vertebrates such as fish, reptiles, birds, and some primitive mammals.泄殖腔：脊椎动物（如鱼、爬行动物、鸟和某些低级哺乳动物）的肠道、生殖道和泌尿道口通往的共用体腔〔crissum〕The feathers or area under the tail of a bird surrounding the cloacal opening.肛周：鸟类尾下泄殖腔开口周围的羽毛或部位 |
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