Ectotrachea
气管外层
🗣️ 情景例句
I am a representative of Politics Association.
我是政治协会的代表。
There are always two sides to everything.
任何事情哒都有2个方面。
Oh! She's falling off her bike. I hope she didn't hurt herself.
噢！她正从自己的自行车上跌落下来。我希望她没有摔伤。