垃圾可以被简单区分为并归入塑料、玻璃和纸三类。

Rubbish can easily be separated and sorted into plastics, glass and paper.

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同时，中国部委的预算并不特别详细：每个部门公布的预算仅一页纸而已，收入与开支分成大约六类。

China's departmental budgets also aren't particularly detailed: Each is only about a page long, and breaks up revenue and expenditure into a half-dozen or so broad categories.

youdao

电子纸肯定就属于第二类。

Electronic paper is surely in the second category.

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