在华盛顿的美国宇航局总部的近地天体计划负责人林德利-约翰逊说，如果一颗足球场大小的小行星撞上了地球，其威力可以毁灭一座大型城市。
Lindley Johnson, head of the near-Earth object program at NASA headquarters in Washington, D.C., says an asteroid the size of a football field could wipe out a major city.
文章作者对克林姆林宫是否会采纳其建议毫无信心，因为现在是普京而不是梅德韦杰夫全权掌握决策权。
The authors have little faith that the Kremlin will take up their Suggestions. Mr Putin, not Mr Medvedev, pulls all strings there.
克里克写信给其合作者莫里斯·威尔金斯博士，庆幸一位女性合作者罗莎林德·富兰克林的退出。
Crick writes to collaborator Dr. Maurice Wilkins and praises the exit of a female collaborator, Dr. Rosalind Franklin.
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