This could cause serious damage to the country's economy.
这可能对国家的经济造成严重破坏。
The database could be used as a teaching resource in colleges.
数据库可以用作大学里的一种教学辅助手段。
I think we could all use a drink after that!
我想我们在事情办完之后都得痛快地喝一杯。
He could just make out three people through the mist.
透过薄雾他勉强能看出有三个人。
The operation could prolong his life by two or three years.
这次手术可使他多活两三年。