这一令人费解的“德雷克等式”为N = R* x Fp x Ne x Fi x Fc x L，先驱科学家德雷克教授曾利用该公式作出预测：银河系中可能存在1万种文明。
The baffling Drake equation reads: N = R* x Fp x Ne x Fi x Fc x L, and helped pioneering scientist Professor Drake to predict that there could be 10, 000 civilisations in our galaxy.
西亚作为人类文明的发祥地之一，是古代中东地区的文明先驱。
West Asia, as one birthplace of human civilizations, is a pioneer of civilization in the ancient Middle East.
这个发现证实在印加的Tiwanaku的一些先驱者们使用能改变精神状态的物质，并且暗示了他们的文明是建立在有广泛影响的交易网上，从而得到这些药物。
The finding confirms that predecessors of the Inca known as the Tiwanaku used mind-altering substances, and hints that the civilization relied on far-reaching trade networks to obtain the drugs.
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