Definitions

[1] UNIX操作系统

[2] [计] 多用户分时操作系统

1. Person of the future: "The calendar of this Unix machine that the ancients built only goes up to January 19, 2038. As such, I am convinced that this marks the day of the Earth's destruction."
   未来的人类：“古代文明人所创造的这台Unix机器、它的历法只到2038年1月19日这一天就为止了，因此我确信那一天必将是地球灭亡之日。”
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