Downstairs after the outside temperature is low.

下楼后才知道外面温度有多低。

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But high and low air pressure differences exist even outside of temperature differences.

但是即使没有温差的存在，空气还是会有高低气压差。

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But high and low air pressure differences exist even outside of temperature differences.

但是即使没有温差的存在，空气还是会有高低气压差。

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