Peritroch
纤毛轮
🗣️ 情景例句
I want to send this letter to China, by air mail.
我想把这封信航空邮到中国。
Thank you but this is something I have to solve by myself.
但有些事情我必须自己解决。
We needed no further warning.
我们不需要进一步的警告了。