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1. 简而言之，这意味着人类已经开采和提炼黄金超过6600年了。

   jiǎn'ér​yán​zhī, zhè yì​wèi​zhe rén​lèi yǐ​jing kāi​cǎi hé tí​liàn huáng​jīn chāo guò6600 nián le.

   In short, this means that humans have been mining and refining gold for more than 6,600 years.

   Source: CCMatrix