In the New Year, all misty thoughts are no longer fog cloud cover lock;

在新年，所有缥缈的思绪，不再雾遮云锁；

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The vapors can extend well beyond the fog cloud depending on the product and atmospheric conditions.

依赖于产品和空气的状况，蒸汽可以在雾云上延伸得很宽。

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If a flammable cryogenic liquid is involved, the flammable mixture zone, under unusual atmospheric conditions, may extend beyond the normal fog cloud produced by condensing water vapor in the air.

如果同易燃低温液体有关，在异常大气条件下，易燃混合物地带会延伸到空气中的水蒸汽的浓缩产生的正常雾云以外。

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They say this is because the red warning lights aren't visible in fog or low cloud.

BBC: London helicopter crash: What are the rules for pilots?

Their solution was to yield most of the canvas or panel to the gray, fog-and cloud-filled sky (curator Emilie Gordenker, director of the Mauritshuis, calls them "our Dutch mountains"), with blue openings torn into the gray here and there so that spots of sunlight could illuminate parts of the land or water below.

WSJ: de Young Museum: More Than Just the Girl

Horrified onlookers watched as the helicopter hit the crane amid low cloud and fog near Vauxhall station, south of the river and not far from landmarks such as the London Eye and the Houses of Parliament, and came plunging to the ground.

CNN: London helicopter crash prompts safety questions