"Historically, it got its name because of its colour - because the water contains more mud and sand than other rivers. But now it's yellower because of human activities, " he said.

穆教授以受到水土问题影响最大的黄河流域为例说，“黄河在历史上因为含沙量高于其它河流而因颜色而得名，但如今人类活动让黄河变得更黄了。”

youdao

Can you imagine a sea of sand three times bigger than India?

你能想象一个比印度大三倍的沙海吗？

youdao

Glass, which has been made since the time of the Mesopotamians and Egyptians, is little more than a mixture of sand, soda ash and lime.

自从美索不达米亚和埃及时代以来，玻璃就已经被制造出来了，它只不过是沙子、苏打灰和石灰的混合物。

youdao

The sand in the two arms moves faster than the sand in the center.

VOA: special.2010.01.04

Hawaii wants to re-invent itself as more than a "sun,sand and surf destination,"

VOA: special.2009.03.02

These sand dunes cover more than seventy-thousand hectares of desert.

VOA: special.2010.01.04

There are said to be more than 156 kilometers of double track checker plate steel creating drivable roads in the sand and more than 4, 000 hollow steel floating pontoons supporting 18 temporary bridges spanning the Ganga and Yamuna.

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The sea is coming, and his carefully built castle, it turns out, is little more than sand.

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The public face of their San Francisco firm, Venture Frogs, is more Melrose Place than Sand Hill Road.

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