To form a tornado, cold air must sit above warm and moist air, and the wind needs to go in different directions at different heights, creating shear forces.

形成龙卷风，寒冷的空气必须处在暖湿的空气上部，而风应该在不同高度向不同的方向运动，以此创造出剪切力。

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Sporopollen implies warm-cool and moist climate of temperate zone, suggesting wide distribution of deciduous and latifoliate forests.

孢粉表明温带气候地区温暖凉爽，表明落叶林和阔叶林的分布广泛。

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Clouds and storms are driven by warm, moist air that rises up off Earth's surface, then cools and condenses.

云朵和暴风雨是温暖、潮湿的空气上升，离开地球表面，然后遇冷并凝结而成的。

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Vanilla comes from orchid plants growing in South America and other places with warm, moist weather.

VOA: special.2010.06.01

The thunderstorm developed in an area where warm moist air rose into cooler air.

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Tangential entries cause the warm moist air to spin as it rises forming an anchored convective vortex.

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Recurrent infections are possible, especially if you continue to expose your nails to warm, moist conditions.

CNN: Nail fungus