A great leader will assess each situation on its merits, and will only take charge when their position, the situation, and/or the needs of the moment demand it.

一个伟大的领导者会评估每一种情况的好坏，并且只会在他们的职位、情景和/或当前的情况需要的时候挺身而出。

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By quickly storing and delivering charge, batteries could accommodate fluctuations in supply and demand, and help to incorporate variable sources of power such as wind and solar.

通过快速的存储和高效率的充电模式，电池可以很快的调节供应和需求之间的平衡，同时又可以吸收其他多变的能源，例如风能和太阳能。

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The price you can charge varies with the supply and demand of the area.

价钱可以随着这个地区需求和供给的不同而变化。

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If they are so in demand that dealers can charge thousands over the sticker price and still they are flying off the lots, just build the cars and they will come.

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Once installed, he laments, officials can grab land, charge fines, and demand bribes under threat of closing down a business.

ECONOMIST: Happiness and wealth

If a customer decides to invoke compute capacity on demand, there is an extra service charge for that month.

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