语境串记多义词
1.The boy is very upset about the coming exam,and his mother is upset by some matters,which upsets the peaceful air in his family.
男孩对即将到来的考试感到很不安，他妈妈也被一些事情所烦恼,这搅乱了他家里平静的气氛。

2.A lawyer carried a case of files to look into a case, and this case is very common in hislife.
一个律师带着一箱文件去调查一个案件,这种情况在他的生活中是很常见的。