Barley was an unexpected find: the crop was domesticated in Western Eurasia and didn't become a staple food in central China until about 2,000 years ago, according to the researchers.

研究人员说，大麦是一个意外发现：这种作物生长在欧亚大陆西部，直到大约两千年前才成为中国中部地区的主食。

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Barley was an unexpected find: the crop was domesticated in Western Eurasia and didn't become a staple food in central China until about 2, 000 years ago, according to the researchers.

研究人员说，大麦是一个意外的发现：这种作物在欧亚大陆西部被引进，直到大约2000年前才成为中国中部地区的主食。

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Various species live in western Eurasia and North and South America and have been introduced into New Zealand and Australia.

许多种栖息于欧亚大陆西部和南、北美洲，曾被引入澳大利亚、纽西兰。

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Moreover, even a sudden drop in oil prices is unlikely to deter Western energy companies from investing there, says Clifford Kupchan, a political scientist at the consultancy Eurasia Group.

FORBES: The All-Energy Economy