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。