办公桌是有成堆的纸和文件，给它们分类不是件容易的事。

There are piles of paper and files all over my desk and sorting them out won't be easy.

youdao

电池要分类，纸要叠起来。

Sort out the batteries, stack the papers.

youdao

要求家长收拾宣传栏，参加各个学习小组，把纸分类，等等。

Ask parents to put up bulletin boards, laminate learning activities, sort papers, and on and on.

youdao