All dogs must be kept on a leash in public places.
在公共场所所有的狗必须用皮带牵住。
She kept on at him to get some qualifications.
她不停跟他说，让他去考取一些资格证书。
A skeleton staff of 20 is being kept on.
留下了20名骨干人员。
He kept on about me being 'defensive'.
他唠叨个不停，说我“有戒心”。
His herd of 170 dairy cattle and 200 young stock are kept on the land.
他那170头奶牛和200头乳牛都在那块地上圈养。