This could cause serious damage to the country's economy.

　　這可能對(duì)國(guó)家的經(jīng)濟(jì)造成嚴(yán)重破壞。

　　The database could be used as a teaching resource in colleges.

　　數(shù)據(jù)庫可以用作大學(xué)里的一種教學(xué)輔助手段。

　　I think we could all use a drink after that!

　　我想我們?cè)谑虑檗k完之后都得痛快地喝一杯。

　　He could just make out three people through the mist.

　　透過薄霧他勉強(qiáng)能看出有三個(gè)人。

　　The operation could prolong his life by two or three years.

　　這次手術(shù)可使他多活兩三年。