Trach
abbr. trachea 气管; tracheation （节肢动物）气管; tracheal 气管的; tracheate （节肢动物）有气管的
🗣️ 情景例句
But first you have to smile.
但首先你得笑一笑。
You haven't sold your product in our country so far, have you?
到目前为止，你们的产品尚未在我们国家销售，是吗？
I would like to express to all of you here our sincere welcome.
让我向在座诸位致以最真挚的欢迎。’