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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In the absence of concerted action to save water, the combination of population growth and climate change (bottom) will create scarcity far and wide.

若不加以协同动作来拯救水资源，人口增长和气候改变将会使更多的地方出现水源紧缺。

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The ecology of the oceans is all about who eats what, and small changes in the population of certain creatures near the bottom of the web could have large effects on larger ones that eat them.

海洋生态系统其实就是谁吃谁的问题。 食物网底端的微小变化可能将对吃它们的较大生物构成影响。

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The court heard she was in the bottom 1% of the population in terms of intellectual function.

BBC: Learning difficulties woman gets pregnancy choice - court

The bottom line: A large population, a large labor force, and a dose of markets may be the necessary condition for leading the global economy.

FORBES: Why China Cannot Lead The Global Economy

Thus the ratio between the incomes of the top fifth of the population and the bottom fifth has risen pretty steadily, to about 22:1, since the early 1980s.

ECONOMIST: Economic reform and social regress?