名词
中文翻译：对流云
同义词：
['convection cloud', 'convective cloudy', 'convection clouds']
例句：
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1. Theconvective cloud above the mountain was moving rapidly towards the valley.
山上的对流云正迅速向山谷移动。
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2.The convective cloud was so dense that it blocked out the sunlight.
对流云如此密集，以至于挡住了阳光。
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3. The convective cloud was a sign of approaching rain.
对流云预示着即将下雨。