We kept up a correspondence for many years.

　　我們保持了很多年的通信聯(lián)系。

　　Have you kept in contact with any of your friends from college?

　　你和你大學(xué)里的朋友還保持聯(lián)系嗎？

　　Your application will be kept on file.

　　你的`申請書將存檔。

　　The thought kept going round and round in her head.

　　這個想法一直縈繞在她的心頭。

　　He kept us at it all day.

　　他讓我們不停地干了一天。