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 never drinks except on special occasions.
除非在特别场合,他从不喝酒。
To swim
游泳
The Native Americans caught and trained them and were then able to use them to carry their goods when they travelled from one camping ground to another.