它们在一个温度受到控制的单独房间里，以保存其中的旧纸。

They are in a separate room where the temperature is controlled, to preserve the old paper in them.

youdao

它们在一个温度受到控制的单独房间里，以保存其中的旧纸。

They are in a separate room where the temperature is controlled, to preserve the old paper in them.

youdao