what's the mean of "keep up"

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/05 08:37:27

keep up
答：Keep up means:
1.maintain a required pace or level
2.lengthen or extend in duration or space
3.keep in safety and protect from harm,decay,loss,or destruction
4.keep informed
5.prevent from going to bed at night

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