Remember that sand, water and snow reflect sunlight and make it even more important to use sunscreen.

记住沙子、水和雪都会反射太阳光，这使得抹防晒霜更为重要。

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Don't dump that sand in the middle of the path.

不要把沙石乱倒在走道中央。

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Did you know that sand can be many different colors?

你知道吗？沙可以有很多不同的颜色。

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For example, lightning can create tubes of glass when it strikes sand that has the right combination of minerals.

VOA: special.2009.09.16

He turned this way and that, and, seeing no one about; he struck down the Egyptian and hid him in the sand.

他左右观看，见没有人;,就把埃及人打死了，藏在沙土里。

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There is something that one might be able to hold on to: the knob of something, the little flame of something that ; The grain of sand. -The grain of sand; but there is really not a decent metaphor for it, I think.

一个你可以依靠的支点：,一个不同寻常的想法，一个思想的小火花,就像一粒沙中看世界，-一粒沙中看世界;,不过我认为任何比喻都不够贴切。

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Now, given his post-election lines in the sand, he wants to rub that sand in.

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Dig up, suck up, that sand and silt then separate the heavier cassiterite from the lighter sand and silt.

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But we need to realize that ultimately we cannot build our house upon that sand, that fundamentally it has so many problems.

CENTERFORSECURITYPOLICY: Center For Security Policy