I sleep with the window open unless it's really cold.

天气若不很冷，我总开着窗户睡觉。

《牛津词典》

Some parts of space are really cold while other parts are very hot.

太空中有些地方很冷，而有些地方很热。

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If it's really cold outside, you might even try a quick shower to get you warm before you do exercise.

如果外面真的很冷，你甚至可以试着在运动前快速冲个澡让自己暖和起来。

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The feet,for example. Heavy socks can warm your feet, if your feet are really cold.

VOA: special.2009.12.13

So I think we can really cold call somebody for this one.

我那随便找个人来问个问题吧

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and when we run in Boston, we have to train in the really, really cold weather.

在波士顿的时候，我们在冒着严寒训练。

在马拉松认识的朋友 - SpeakingMax英语口语达人

Temperatures plummeted to the low teens or single digits in spots and people got really cold.

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"That was really cold, but it made the pictures look cool, " Josh said.

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And, you know, considering it's really cold--it's winter here.

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