这些研究都在逼近一个最为核心的问题：人类，究竟能不能在太空繁衍生息，这也是人类走向深空的必经之路。
Yellow: Sub out
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"[Our company] made that brick from the late 60s through about the middle part of the 80s, and I had sold millions of bricks from that plant."
What is gambling, anyway?