In the earliest study of regional dialects, a scholar, Xu Shen, in the first century took on the mammoth task of surveying the different forms of everyday speech.
我想,in the 21st century 你应该知道是在21世纪。 in the first century 就不知道了?不是很简单么:在公元一世纪。由此看来,网友要上MTI (翻译硕士),还有段距离,加油!
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