A solar year hard head, busy in the winter, it almost exhausted, can not put to the thermal.

太阳一年操劳到头，忙到冬天，就筋疲力尽，几乎放不出热力来了。

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Changes in eccentricity, tilt and wobble do not affect the total amount of solar radiation Earth receives in a year.

离心率、倾斜和摆动的变化并不影响地球一年接收到的太阳辐射总量。

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In China, there are 24 solar terms (节气) in a year.

在中国，一年有24个节气。

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"The cost of solar has been dropping on average about 30 percent a year, where the cost of traditional energies has been going up exponentially because the price of fossil fuels is going up,".

VOA: standard.2009.10.27

For example, we actually backed a solar company last year, Black Swan Solar.

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The solar manufacturing business has been in a bad shape over the past year as a glut of solar panels worldwide caused the panel prices to fall by about 50 percent during 2011.

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The 2.5-acre property has a 51-panel solar system with a 20-year assignable contract with utility company Xcel Energy.

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