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(shū)將存檔。

　　The thought kept going round and round in her head.

　　這個(gè)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。