The weather changed from cold to warm without warning.

天气说变就变，一下子从冷变暖了。

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Psychologists take opposing views of how external rewards, from warm praise to cold cash, affect motivation and creativity.

对于外部奖赏（从热情的赞扬到冷冰冰的现金）如何影响积极性和创造力，心理学家持相反的观点。

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In autumn, Canada geese have to fly to the warm south to get away from Canada's cold winter.

秋天，加拿大鹅要飞到温暖的南方去躲避加拿大寒冷的冬天。

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To avoid cold-related injuries, here is a simple way to remember four basic steps to staying warm.

VOA: special.2009.12.23

I'm hot, compared to the air of the room, or cold if I'm somewhere that's warm.

我相对于室内的空气是热的，或是冷的如果我呆在一个温暖的地方。

麻省理工公开课 - 热力学与动力学课程节选

The resurgence of that relationship is a little Romantism in the cold war years when the Soviet Union and India were very warm...had warm relationships, integrated to each other.

印美关系的复苏,在冷战年代完全是理想主义,当时苏联和印度,还保持着非常良好的关系，交往密切。

普林斯顿公开课 - 国际座谈会课程节选

It's getting from being cold to warm and the tracks actually sweats, like a person does, because of the temperature.

NPR: Long Desired, Streetcar Returns to New Orleans

Defensive? or just freezing cold trying to keep myself warm?

FORBES: 10 Body Language Tics That Could Cost You The Interview -- And The Job

In a statement, the PSNI said motorists had a tendency to leave their vehicles running during a cold snap to de-ice them or warm them up.

BBC: Three arrests over Belfast car thefts