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
He brings it up as if we know that this is what he's been talking about all the time.
他提出这个好像我们知道一样,这是他一直在说的东西。
And what we saw last time is that this was necessary to make things work, this part of it in particular.
上节课我们讲,这是对外做功的必要条件,特别是这个部分。
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