Tracheolar
小气管
🗣️ 情景例句
Please tell me about your working background.
请告诉我你的工作背景。
Kill two birds with one stone.
一石双鸟；一箭双雕。
Oh! Is that a ball? Aren't all balls round?
噢，那是个球吗？难道所有的球不都是圆的吗？