Ectotrachea
气管外层
🗣️ 情景例句
Titusville. It's near Orlando. Titusville
在Orlando附近。
Let's have fun tonight.
今晚让我们乐一乐。
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？