It took me two hours to sift through several piles of papers looking for the missing article.
It took me two hours to sift through several piles of papers looking for the missing article.
我花了两小时从几堆文件中查找那篇丢失的文章。
It took me two hours to sift through several piles of papers looking for the missing article.
我花了两小时从几堆文件中查找那篇丢失的文章。