n. 弓形;拱門;拱形物;足弓,齒弓;
vt. (使)彎成拱形;用拱連接;向后彎;
vi. 拱起;成為弓形;
adj. 主要的;首要的;調皮的;淘氣的;
??? 情景例句
The radio has lost most of its audience, thanks to TV.
由于電視的存在,收音機失去了大量聽眾。
He insisted that we all be in his office at one o'clock.
他要求大家一點鐘到他的辦公室。[大學英語四級]
In their efforts to persuade us to buy this or that product, advertisers have made a close study of human nature and have classified all our little weaknesses.