Day102 perfect

1）翻译下面的句子：   

他是在德国读本科期间提高了自己的德语能力。

During the period of studying his undergraduate degree in Germany,he perfected his German.

2）结合自己的生活、学习、工作、兴趣等，想象在什么语境下会用到这个表达。先简要描述这个场景，再造句。     

例子：Aiming to perfect her English,she practices it every single day.

场景：为了精进她的英语，她每天都在练习。