sirenian mammal of tropical coastal waters of America; the flat tail is rounded
发音
例句
1. We watched dolphin, manatee, sea lion and whale shows. 我们看了海豚、海牛、海狮和鲸的表演。 2. One of the most extraordinary river creatures is Amazonian manatee. 其中河里最特别的生物之一要数亚马逊海牛。