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
This must be Pete's barn.
这一定是Pete的粮仓了。
All bags contain an inner waterproof lining.
所有包内都有一层防水内衬。
Although mankind has undergone no general improvement in intelligence or morality, it has made extraordinary progress in the accumulation of knowledge.