单词：keep after
追踪,跟踪追击
keep after的用法和样例：
例句
- Her mother had to keep after her to clean her bedroom.她母亲不得不反复提醒她打扫寝室。
- The teacher had to keep after her pupils to do their homework neatly.教师一再嘱咐她的学生要把作业写整齐。
- The police kept after the criminal until they seized him.警察紧紧追赶罪犯，直到把他抓住。
- Sorry to keep after you, but can you tell me who's responsible for it?对不起老缠着你，但是你能告诉我谁应对此负责吗？