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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They're up to a kilometer long, but only a few meters wide, and they're scattered along the desert floor, in valleys between the dunes.

我们所看到的石灰岩层高达一千米，而宽却只有几米，沿着沙漠底部和沙丘间的山谷分布。

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Death valley is this desert plain, a dry lake bed in California surrounded by mountains and on the desert floor these huge rocks, some of them hundreds of pounds.

死亡谷是一片沙漠平原，是加利福尼亚的一个干涸的湖床，四周群山环绕，在沙漠的地面上有巨大的岩石，有些重达数百磅。

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The Grand Canyon was cut into the desert floor beginning thousands of years ago.

VOA: special.2009.08.12

The violent water cut hundreds of meters deep into the desert floor of Arizona.

VOA: special.2009.08.12

Then I see something jackrabbitting across the desert floor and coming to rest right behind a sage bush maybe 20 feet away.

FORBES: Magazine Article

Right here on the flight line in crash landings, the helicopters landing in what are called brown-out conditions, meaning the dust on the desert floor rises up and engulfs the helicopter and it is very difficult for the pilot to see the ground in those conditions and very easy to mess up the landing.

CNN: Ryan Chilcote: First deep attack

At 9, 730 feet, a vertical mile above the valley floor, you gaze out over 60 square miles of alkali --the Alvord Desert.

FORBES: A Desert Where?