The company agreed to keep up high levels of output in order to compensate for supplies lost
这家公司同意保持高产量以弥补供货丢失带来的'缺口。
I still keep up my acquaintance with him.
我仍然和他保持朋友关系。
I can't keep up with all the changes.
我并非所有的变化都能跟得上。
It pays to keep up to date with your work.
工作能跟上时代是有利的。
It is difficult to keep up with the rapid pace of change.
跟上迅速的变化是很困难的。
Slow down ─ I can't keep up!
慢点——我跟不上了！
When she lost all her money, she was determined to keep up appearances.
她把钱全亏光时，决意佯装若无其事。