对流层（大气的最低层，在地球表面和 6 至 10 公里上空之间）the lowest layer of the earth's atmosphere, between the surface of the earth and about 6-10 kilometres above the surface
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对流图
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对流圈
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【气象学】对流层
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thelowestandmostdenselayeroftheatmosphere, extending 10 to 20 km (6 to 12 mi), inwhichtemperaturedecreaseswithrisingaltitudeandmostweatheroccurs