Only if the price of electricity were to triple would the amount of electricity used to generate light start to fall by 2030.

只有电价增至三倍，用于照明的总耗电量到2030年才会开始下降。

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He's also decided to give up leadership in Light up the World Foundation to start a company in India that will develop a more energy-efficient and cheaper lighting system that he hopes will bring even more light to the world's poor.

VOA: standard.2009.12.13

Absorption is just the opposite of emission, so instead of starting at a high energy level and dropping down, when we absorb light we start low and we absorb energy to bring ourselves up to an n final that's higher.

吸收就是发射的逆过程,与从一个高能量到低能量不同，当吸收光时，我们从低能量开始,吸收能量到一个更高的能量。

麻省理工公开课 - 化学原理课程节选

Entities like ARPA-E and Ultra Light Start-Ups serve to increase the velocity of that change, by exposing good ideas to financial backing and experienced management.

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Maybe, with a little nudging, one by one, flickers of light will start to burn in their heads.

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Ken: Analysts say the settlement over the robo signing scandal has given the banks a green light to start a wave of foreclosures that will make an already oversupplied housing market worse.

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