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The Water Cycle(高二适用)
引用本文:孟国凯.The Water Cycle(高二适用)[J].中学生英语,2000(8):15-15.
作者姓名:孟国凯
作者单位:浙江省金华五中
摘    要:Most of the earth is covered with water. About 70 per cent of the water on earth is in the oceans,but water also exists in rivers and lakes. It occurs as ice or water vapour in the air. All together, there are about 330 million cubic (立方体的) miles of water on earth.

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