Petronas is also involved in upstream activities in Algeria, Angola, Chad, Cameroon, Gabon, Niger, Sudan, South Africa, Tunisia and Lybia.

Petronas还在阿尔及利亚、安哥拉、乍得、喀麦隆、加蓬、尼日利亚、苏丹、南非、突尼斯、利比亚从事上游活动。

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Hongshan culture, is now five, an inter-6000BC in the north of the Yanshan, Daling and the West Liaohe River upstream activities of the tribal groups to create the culture of agriculture.

红山文化是距今五、六千年间一个在燕山以北、大凌河与西辽河上游流域活动的部落集团创造的农业文化。

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Third, and when appropriate, it must include the build process of systems both upstream and downstream into its own build and testing activities.

第三，适当的时候必须包括自身构建与测试行为的系统构建流程。

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Upstream activities include oil and natural gas exploration, field development and production.

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He thinks that its upstream activities are the best among the big companies, and that means it can boost its earnings even without a spike in oil prices.

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This consists, first, of paying too much attention to the upstream development of new inventions and technologies by scientists and engineers, and too little to the downstream process of turning these inventions into products that tempt people to part with their money, and, second, of the belief that national leadership in upstream activities is the same thing as leadership in generating economic value from innovation.

ECONOMIST: Economics focus