A study using data on cloud cover taken from satellite images dating from 1979 found that 65% of the world's skies were covered by cloud when cosmic rays were weakest and 68% when they were strongest.

研究从1979年起卫星云图所示云量的数据，发现宇宙射线最弱时，全球空中65%的面积被云层覆盖；最强时这一数字为68%。

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Every morning I download and process that data to determine the amount of cloud cover on Titan. The result is that I get a daily weather report for Titan.

每天早晨，我下载并处理那些数据，以便推算出泰坦上的云层覆盖量。

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I was thirty-seven then, strapped in my seat as the huge 747 plunged through dense cloud cover on approach to the Hamburg airport.

37岁的我端坐在波音747客机上，庞大的机体穿过厚重的夹雨云层，俯身向汉堡机场降落。

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Businesses increasingly have been relying on cloud computing to cover more of their enterprise application needs.

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It was too late for a Friday attack, and on Saturday there was excessive cloud cover.

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Despite his hopes for Saturday's first session, Finn said it was "obviously frustrating" that England were not able to take the new ball with thick cloud cover overhead on Friday evening as the umpires ruled the light had become too poor.

BBC: Ashes: Early start suits England, says Steven Finn