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中国也藉种树减少长江洪泛，并考虑造林以防戈壁沙漠扩张。
China has used tree plantation to lessen flooding in the Yangzi area, and is suggesting building a green wall of forestry to ward of the expanding Gobi Desert.
如果我们想在这个星球上生活下去，沙漠扩张的势头必须得到遏止。
The expansion of deserts must be stopped if we are to survive on this planet.
我们担心电网会崩溃、不可再生资源会枯竭、沙漠会扩张、岛屿会消失、空气和水会受到污染。
We fear the breakdown of the electric grid, the end of non-renewable resources, the expansion of deserts, the loss of islands, and the pollution of our air and water.
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