But Dr. Caldeira says that small-scale testing — perhaps an experiment intended to slightly cool the Arctic — could be safer than the alternative.

但卡德拉教授则认为，小范围的测试——可能对北极进行小幅降温的实验——是更安全之举。

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The Australian climate is hot and humid in the north and slightly cool in the south.

澳洲的气候是北部湿热，南部凉爽。

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The Australian climate is hot and humid in the north and slightly cool in the south.

澳洲的气候是北部湿热，南部凉爽。

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