When it was time for him to leave the spacecraft, this is what the world heard: "Roger,Flight,we're GO."
VOA: special.2009.06.24
And by the time I'm a million, I no longer remember what I was doing when I was a lad of 500,000.
等我活到一百万年,我不记得,50万年前做过什么。
What would be the probability that a married couple would live, both of them, to the time when their children were grown?
一对已婚夫妇双双活到,孩子成年之后的概率是多少呢
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