求翻译：在我们地球，有两样最重要的东西，水给树，树不仅可以美化环境，还可以释放氧气，防止土地沙化，避免水土流失，所以树很利于我们改善环境是什么意思？

Our planet, the most important things are different, the water to the tree, the tree can not only beautify the environment, but also can release oxygen, prevent desertification, to avoid soil erosion, so the tree is very beneficial to improve our environment

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Not only in our Earth, has the different most important thing, Shui Geishu, the tree may beautify the environment, but also may release the oxygen, prevented the land desertification, avoids the soil erosion, therefore the tree favors us to improve the environment very much

Our planet, there are two of the most important things, water for the tree, the tree can not only beautify the environment, you can also release oxygen, preventing desertification and avoid soil erosion, so the trees are for us to improve the environment

In our earth, there are different most important things, water gets on the tree, the tree not merely can beautify the environment, can also release the oxygen, prevent the desertification of land, avoid the soil erosion, so the tree facilitates us improving the environment very much