Make a pile for each different type of record, and use the opportunity to discard everything inessential.

将不同种类的记录分堆叠放，利用这个机会丢掉任何不重要的东西。

youdao

Make a pile for each different type of record, and use the opportunity to discard everything inessential.

将不同种类的记录分堆叠放，利用这个机会丢掉任何不重要的东西。

youdao