He proposed it in the 1st century B. c.
京房公元前1世纪就提出来了。
This probably occurred in the early 1st century CE.[6]
这个事件可能发生在公元一世纪早期。
Fine cameo glass was produced by the Romans in the 1st century AD.
早在公元1世纪，罗马人已生产出精美的宝石玻璃品。
Jing Fang did it much earlier. He proposed it in the 1st century B. c.
中国的京房比他早得多。京房公元前1世纪就提出来了。
Around the 1st century BC, the territory of Rome experienced a quick and mass extension.
公元前1世纪前后，罗马国家的版图经历了大规模而迅速的扩张。
Around the 1st century BC, the territory of Rome experienced a quick and mass extension.
公元前1世纪前后，罗马国家的版图经历了大规模而迅速的扩张。
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