sirenian

sirenian

1. sirenian mammal of tropical coastal waters of America; the flat tail is rounded

产于美洲热带沿海水域的海牛类哺乳动物

2. sirenian mammal of tropical coastal waters of America; the flat tail is rounded.

产于美洲热带沿海水域的海牛类哺乳动物。

3. sirenian tusked mammal found from eastern Africa to Australia;

见于非洲东部到澳大利亚的有尖牙的海牛目哺乳动物；

4. sirenian tusked mammal found from eastern Africa to Australia; the flat tail is bilobate.

见于非洲东部到澳大利亚的有尖牙的海牛目哺乳动物；扁平的尾巴分两叉。