In the largest airborne survey of Earth's polar ice, the airplanes of Operation IceBridge carry an array of instruments to measure the ice from top to bottom.

在对地球极地冰川进行的最大的一次空中调查中，执行“冰桥行动”的飞机携带了很多仪器从头到脚对冰川进行了测量。

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The technique, called polar body array comparative genomic hybridisation, is the first that can check all of an egg's chromosomes to see if any are missing or duplicated.

这项新的技术是利用一种叫作极体的物质携带CGH，它能率先检测出卵细胞的染色体是否丢失是否已经复制。

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