keep up

prnt from going to bed at night

防止晚上睡觉

The anticipation of the trip kept the children up all night

对旅行的期待使孩子们整夜睡不着觉

I kept myself up all night studying for the exam

我整夜熬夜为考试而学习

keep informed

随时了解情况

He kept up on his country's foreign policies

他继续执行国家的外交政策

keep abreast

follow

maintain a required pace or ll

保持所需的速度或水平

He could not keep up and dropped out of the race

他跟不上，退出了比赛

keep in safety and protect from harm, decay, loss, or destruction

保持安全，防止伤害、腐烂、丢失或毁坏

We preserve these archeological findings

我们保存这些考古发现

The old lady could not keep up the building

那位老太太不能继续住这幢楼

children must be taught to conserve our national heritage

必须教育儿童保护我们的民族遗产

The museum curator conserved the ancient manuscripts

博物馆馆长保存了古代手稿

conserve

preserve

maintain

lengthen or extend in duration or space

延长或延长持续时间或空间

We sustained the diplomatic negotiations as long as possible

我们尽可能长时间地维持外交谈判

prolong the treatment of the patient

延长病人的治疗时间

keep up the good work

继续做好工作

prolong

sustain