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最佳答案：Let us keep the water clean - don't change the environment of the source of wate
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最佳答案：北坡的树,靠近山溪,水源充足,但缺乏阳光；The tree on north slope enjoys plenty of water, but lakes s
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最佳答案：Lawn as beautify the environment,purify the air and water,heat and cooling,adjus
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最佳答案：城市的空气污染造成空气污浊,人们的发病率上升；水污染使水环境质量恶化,饮用水源的质量普遍下降,威胁人的身体健康,过度释放二氧化碳使全球变暖.Air pollut
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最佳答案：1.Perhaps you think that I speak on the subject of water,but are not in tune to
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最佳答案：Besides, the climate changing is another improtant reason for water shortage.The
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最佳答案：Family 303, building 15, Yan wu dong No.61-276, Chang an district, Shui yuan Cit
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最佳答案：你的中文忘贴出来了