The symptom includes pale face, cold moist limbs, cold sweat, dizziness, nausea, rapid heartbeat, weak pulse, shallow breath, unconscious, etc. These symptoms may appear before or during the coma.

常见面色苍白、四肢湿冷、出冷汗、头晕、恶心、心跳急速、脉搏细弱、呼吸表浅甚至昏迷不醒等症状，这些症状可能发生在昏厥之前或当中。

youdao

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。

youdao

The influx of cold air on top of warm, moist air favours the sort of deep convection that creates powerful storms, turning moisture in the air into water on the ground very efficiently.

寒冷的空气流入的温暖空气的顶端，潮湿的空气形成的深对流造成强烈的风暴，大气中的水分高效的形成降水于地面。

youdao

Meteorologists were blaming the nor'easter on the collision of two storm systems: cold air traveling south from Canada bumping into a moist low pressure system heading north from the Carolinas.

WSJ: Major Blizzard Bears Down on Northeast

Tornadoes are most likely when exceptionally cold, dry air plunges south to violently clash with warm, moist air originating in the Gulf of Mexico.

FORBES: Alarmists Offer A Perfect Global Warming Challenge