電子書可以減少對環境造成的污染。例如，我們用電子書可以減少浪費紙張，可

電子書可以減少對環境造成的污染。例如，我們用電子書可以減少浪費紙張，可以避免砍伐樹木。電子書佔用的空間很少,不需要一個圖書館或者房間來存放它們。可以在電腦裡存上幾百部甚至幾千部的電子書。

結果 (英文) 1:

E-books can reduce the pollution of the environment. For example, we use e-books can reduce paper waste, avoid cutting down trees.
E-books take up little space, do not need a library or a room to store them. We can save a few hundred or even thousands of e-books in the computer section.

結果 (英文) 2:

E-books can reduce environmental pollution. For example, we can reduce paper waste and cut down trees with e-books.
E-books take up so little space that you don't need a library or room to store them. You can store hundreds or even thousands of e-books on your computer.

結果 (英文) 3:

E-books can reduce the pollution to the environment. For example, we can use e-books to reduce the waste of paper and avoid cutting down trees.
E-books take up very little space, do not need a library or a room to store them. You can store hundreds or even thousands of e-books in the computer.