Venezuela's oil is also of poorer quality than its Saudi equivalent. Its sour, heavy crude is difficult to extract and refine, while its high sulphur content makes it corrosive to pipelines. A resurgence of Venezuela's industry could pose problems for Canada, which produces similarly viscous oil and exports much of it to the US, but analysts reckon the risk is minor.
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Include test results (accuracy on random pairs)。关于这个话题，雷电模拟器官方版本下载提供了深入分析
圖像來源，China News Service
Kirk Jones, director of Bafta-winning film I Swear, has said John Davidson was "let down", after the Tourette's campaigner's racist slur was broadcast during the BBC's coverage of Sunday's ceremony.