Your brain and your nervous system need glucose to work: that means walking, speaking, stretching, typing - any activity requires this fuel.

你的大脑和中枢神经系统的工作需要葡萄糖：即走路，说话，拉伸，打字-任何活动都需要这种燃料。

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Other factors include changes in solar activity, the increased water vapour that can be held by warmer air and soot and other particles produced by fossil fuel and wood burning in Asia.

其他因素包括太阳活动，通过温暖的空气、烟尘、在亚洲化石燃料和木材燃烧产生其他粒子的变化都可以增加水汽以至变暖趋势降低。

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High energy prices and environmental concerns will also contribute to fuel cell commercialization activity and market gains.

高能量的价格和环境影响将对燃料电池商业化活动和市场收益起到促进作用。

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Anecdotally, consider how much typical General Aviation flying activity has fallen as fuel prices have risen.

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So in terms of measures that are helping fuel economic activity and growth, he fought very hard for and achieved, as part of the tax cut compromise in December, extension of uninsurance -- unemployed benefits -- unemployment benefits and obviously the middle-class tax cut, as well as the payroll tax cut -- the payroll tax holiday.

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That figure is now considerably less but still probably three times global GDP, and represents a massive supply of fuel for economic activity.

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