His mother has to keep after him to finish his homework.
他妈妈只得反复提醒他完成家庭作业。
What is that you ought to keep after you give it to somebody else?
什么东西在你给别人后你要保留着它。
Sorry to keep after you, but are there any vacancies in the course?
抱歉,我一问再问,这个课程还有名额吗?
Freezing can keep some foods in good condition for months after the growing season.
VOA: special.2009.11.30
We have to change the approach if things aren't working but we have to keep after it.
必须改变现有的方式,不论是否会有成果。
It is important to keep going after you finish this course.
在完成这一课程后,进一步的学习非常重要。
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