桑迪亚原型的太阳能采集器有一个约20平方米（215平方英尺）的面积，用于一个啤酒桶大小的反应堆。

The Sandia prototype's solar collector has an area of about 20 square meters (215 square feet) for a reactor the size of a beer keg.

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皮肤颜色、生活地点和暴露在外的皮肤面积大小，都会影响你的身体所能产生的维他命D的量。

Skin color, where you live and how much skin you have exposed all affect how much vitamin D you can produce.

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科学家们一致认为，这一情境中的关键推手是南极西部的冰层，这是一块跟巴西（面积）差不多大小的冰原，厚达7000英尺。

Scientists agree that the key player in this scenario is the West Antarctic ice sheet, a Brazil-size mass of frozen water that is as much as 7000 feet thick.

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That's the work that the system is doing to the environment. I'm doing work to the environment. The work is negative, which means that work is being done to the environment.

功的大小,就是矩形的面积,这样我们就实现了一台热机，冷却，加热，加热,冷却，系统回到了初态。

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Also, you'll notice that the size of the body part represented in the brain does not correspond to the size of the body part in the real world.

而且你会发现,身体部位在大脑中对应的皮层面积大小,与身体部位的实际大小并不一致

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