They typically occur in the lower atmosphere ahead of a storm front.

它们通常于暴风雨前在低层大气中露面。

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As a result, the surface and the lower atmosphere warm up.

因此，地表和低层大气的温度相应升高。

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As a result, the surface and the lower atmosphere warm up.

因此，地表和低层大气的温度相应升高。

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