Arch tube
[机] 拱管
🧩 词语组成解析
arch
[ɑ:tʃ]
n. 弓形;拱门;拱形物;足弓，齿弓;
vt. （使）弯成拱形;用拱连接;向后弯;
vi. 拱起;成为弓形;
adj. 主要的;首要的;调皮的;淘气的;
🗣️ 情景例句
He studied harder to improve his English.
他更加努力提高英语水平。
Why didn't you say so?
为什么不早说？
It seems too high to me.
好像贵了一点。