你有什么类型的纸张选择，以及如何做你的照片的内容涉及到您选择的文件？
What kinds of paper choices do you have, and how does your photo's content relate to the paper you choose?
27：机票：很简单，选择电子票而不是纸质票，减少浪费的纸张。
Air travel ticketing: Simple, choose an electronic ticket rather than a paper ticket and thereby reduce the need for paper to be wasted.
但是从生物多样化的角度来看，并且考虑到纸张的存储问题，这些树木只是次等替代品中更好的选择，而且也不一定都是更好的选择。
In terms of biodiversity, though, and often of carbon storage as well, they are at best inferior replacements. And they are not always at their best.
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