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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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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We continue to advance our upstream oil and gas activities in West and Southern Africa, the Asia Pacific region and Canada.

我们将继续在非洲西部和南部、亚太地区和加拿大推进我们的上游石油及天然气业务。

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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