Footprint - the area in which a specific transmission can be received. Some footprints cover as much as one-third of the earth, such as satellite or cell systems.

覆盖面-某个卫星信号覆盖的区域。有些卫星信号覆盖面非常大，达整个地球的三分之一，例如卫星或手提电话系统等。

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Consequently, ion exchange strengthened cover glass can increase the reliability of solar cell, which can improve service efficiency and prolong the life of solar cell.

因此化学钢化能提高太阳能电池长期工作的可靠性，对提高太阳能电池的使用效率及寿命具有实际意义。

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So that's the introduction. Next time, I will cover some of the limitations we have changed as well as changes to cell styles.

就介绍到这里，下次我将介绍对这些改变所作的一些限制，就像对单元格样式作的改变一样。

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In a large heart attack, the area of cell death can cover the entire thickness of the chamber's wall.

BBC: Dr Robert Judd

It's probably also going to cover cell phones, BlackBerrys, stuff like that.

NPR: Airlines Take Security Alert in Stride

In "Spore, " players make choices that evolve a creature from single cell--you cover the first 20 million years pretty quickly--to planet-hopping spaceship pilot, all with Pixar-quality cartoon brilliance of critters and landscape.

FORBES: Incubating 'Spore' The Wright Way