Trichechiformes
海牛形亚目
🗣️ 情景例句
It's just one of those things.
这样的事情总是难免的。
Modesty is the ornament of woman.
端庄可为妇女增添光彩。
Every year, several classes visit the factory.
每年都有好几个班去参观这家工厂。