Things ain't what they used to be.

　　現(xiàn)在情況不比從前了。

　　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。

　　You used to see a lot of her, didn't you?

　　你過去常見她吧？

　　They had got too used to the soft life at home.

　　他們實在是過慣了家里的安逸生活。

　　I used a long exposure for this one.

　　我這張照片用的曝光時間長。