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11月21日下午14点15分,中美间首条生物航煤商业载客航班启航，航班号为HU497的海航787客机从北京起飞，使用地沟油回收制成的生物航煤跨越太平洋飞赴美国芝加哥。Hainan Airlines Flight 497 took off from Beijing at 2:15 pm Tuesday, he
A member of the Chinese scientific researcher team waves before boarding the research vessel and icebreakerXuelong, or Snow Dragon, in Shanghai, July 20, 2017. China's ice breaker, theXuelong, set sail on Thursday fo
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