All dogs must be kept on a leash in public places.

　　在公共場所所有的狗必須用皮帶牽住。

　　She kept on at him to get some qualifications.

　　她不停跟他說，讓他去考取一些資格證書。

　　A skeleton staff of 20 is being kept on.

　　留下了20名骨干人員。

　　He kept on about me being 'defensive'.

　　他嘮叨個(gè)不停，說我“有戒心”。

　　His herd of 170 dairy cattle and 200 young stock are kept on the land.

　　他那170頭奶牛和200頭乳牛都在那塊地上圈養(yǎng)。