Arch framing
[机] 拱形结构
🧩 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;
[计] 成帧
🗣️ 情景例句
When did the Roman Empire come into being?
罗马帝国是什么时候形成的？
If it hadn't been for your help, we would never have finished it.
如果没有你的帮助，我们永远完不成任务。
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，