Oilfield water injection is the main way to keep the reservoir pressure, and to reduce the crude oil decline.

油田注水是保持油层压力、降低原油递减率的主要措施，注水泵机组是油田注水的关键设备。

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The implication is a sharp decline in global trade, which has plunged partly because oil-producing nations can't afford to import as much as they used to.

这意味着，全球贸易大幅下滑的部分原因，是产油国无法像过去那样进口那么多资源。

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Fears are now being voiced that the planned construction of an oil pipeline across the lake's bottom might revive pollution and cause the fish population to decline again.

现在有人担心，计划修建的穿越湖底的输油管道可能会重新造成污染，导致鱼类数量再次下降。

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Global Witness says trends in the number and average size of oil discoveries has been in decline since 1965.

VOA: standard.2009.10.20

In the report, called "Heads in the Sand", the group says a serious decline in the supply of oil coupled with increasing demand and few new projects planned, means the world needs to move away from oil.

VOA: standard.2009.10.20

Money manager Dominic Freud invests in cheaper stocks looking to benefit from an oil decline.

FORBES: StreetTalk With Bob Lenzner

If the regime actually proceeds with LNG exports, oil export decline will accelerate for lack of reinjection gas.

FORBES: Magazine Article

Another argument for an oil price decline revolves around an unwinding of speculation.

FORBES: A Shield Against The Next Oil Shock