? 同義詞
??? 情景例句
Do you have to act like that?
你非得那么做嗎？
I couldn't keep the appointment because I was sick.
我不能赴約因?yàn)槲也×恕?/div>
It was the idea of supporting a craft on a 'pad',or cushion, of low-pressure air, ringed with a curtain of higher pressure air.
用一個(gè)氣墊來支撐船體，低壓空或軟墊，軟墊周圍用高壓空氣環(huán)繞。