俚语：Catch up on/达到适当的标准

　　定义：come up to the proper or normal level ( of work, knowledge, etc. )(工作或知识等)达到适当或正常的水准。

　　例句：After being in the hospital for a year, she had a lot of living to catch up on.住院一年之签，她必须尽力维持生计。