But the use of fossil fuels was clearly vital in driving a step change in rates of economic and population growth.

然而矿物燃料的应用无疑是至关重要的，他使经济与人口增长跃上了新的台阶。

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It is also vital that we improve the rates amongst pregnant women as well.

提高孕妇的接种率也同样重要。

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Lower interest rates are thus vital for these countries.

于是利率能否更低对这些国家生死攸关。

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As he arrived at Wednesday's meeting, the prime minister said competitive tax rates were vital for securing investment but firms must abide by the rules.

BBC: David Cameron seeking action on tax avoidance at EU summit

Worse, the policy of manipulating interest rates to artificially low levels has interrupted the vital market-based connection between interest rates and investment decisions.

FORBES: The U.S. Needs To Win The Battle To Limit Government Now

That interest rates are near zero demonstrates how few vital signs of economic life are still detectable.

FORBES: Japan: Falling Off The Cliff