It's possible that rain on the desert floor could turn to thin sheets of ice when temperatures drop at night.

当夜间气温下降时，沙漠地面上的雨水有可能变成薄冰。

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After lying for hours on cold ground, with only a thin sleeping bag to protect you from rain or ice, your fingers would probably be so numb that you could hardly move them.

在冰冷的地面上躺上几个小时后，只有一个薄薄的睡袋来保护你免受冰雨侵害，你的手指可能会麻木到几乎动不了。

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Then, when snow or rain wash them onto an ice floe, they darken its surface and thus cause it to melt faster.

随后，雪或雨水将他们冲刷到冰面上，冰的表面会变黑，因而融化的也更快。

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The same brutal Arctic cold front that's already delivered subzero temperatures across the upper Midwest and Northeast is forecast to bring ice and freezing rain to the South and Mid-Atlantic states on Friday.

CNN: Fierce cold 'a constant blast in the face' for many

Snow, ice, rain and sleet have affected many parts of the county, with 2-5cm (1-2in) of snow expected later and up to 5-10cm (2-4in) on high ground.

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