They are in a separate room where the temperature is controlled, to preserve the oldpaper in them.
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。
2
Any oldpaper will do.
随便一张纸就行。
《柯林斯英汉双解大词典》
3
Amazon, by far the largest bookseller in the country, reported on May 19 that it is now selling more books in its electronic Kindle format than in the oldpaper and ink format.