Answer: Radioactive material falling from the air or carried in rain water or snow, can deposit on the surface of foods like fruits and vegetables or animal feed.

答：从空气中或者通过雨水落下来的放射性物质可以沉积到诸如水果和蔬菜等食物的表面或动物饲料中。

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“We deposit energy to a precise depth below the surface of the skin without affecting the intervening tissue,” said Matthew Likens, chief executive of Ulthera, the Mesa, Ariz., company behind it.

“我们把能量传递到皮肤表面下某个精确的深度，不会干扰中介组织。” Ulthera代表法人Mesa, Ariz., 公司的总裁 Matthew Likens 说明。

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The Pb-Zn deposit in Northeastern Guangxi are occurred under the surface of unconformity between the Cambrican-Ordovician and the lower Devonian , and were formed under complex conditions.

老厂海洋山产于寒武—奥陶系与泥盆系不整合面之下的铅锌矿床， 形成条件复杂， 矿床成因独特。

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And when its aluminium coating is replaced with silver in a year or two's time (a huge vacuum-chamber housed at the telescope's base will be used to deposit metallic vapour on to the mirror's reflecting surface), it will be able to see into the infra-red with equal clarity, opening up a much neglected area of astronomy.

ECONOMIST: Japan��s new telescope