U-tube
[化] U型换热管
🧩 词语组成解析
🗣️ 情景例句
I wish Robbie and Alexandra had come to this meeting.
我真希望Robbie和Alexandra已经来参加开会。
Keep good men company, and you shall be of the number.
近朱者赤。
Oh, a lot of different things! One machine helps them to put rice in bags.
能做好多不同的事情呢！比如能帮助农民把大米装袋等。