希賽網(wǎng)為考生們整理了2011年中國礦業(yè)大學(xué)(北京)考博英語翻譯部分真題及答案，供考生們備考復(fù)習(xí)。

The sun heats the Earth’s surface unevenly causing differences in air pressure. It’s these differences that cause wind to flow over our planet’s surface. Scientists convert wind energy into electrical energy by using wind mills or wind turbines. The turbines take the movement of the air and convert it into mechanical energy. Each wind mill contains blades that are connected to a generator. The faster the blades spin the more energy that is produced by the generator. In areas that have constant winds, you will find wind farms and small, wind-driven generators. On these wind farms are hundreds of wind turbines capable of providing the electricity for entire communities. The small wind-driven generators are used for individual homes to produce electricity. Similar to solar energy, wind energy cannot be consistently used. There are some areas around the world that do not have constant winds. In areas like windy mountain passes, the wind does not blow continuously. Therefore wind energy is only dependable for certain areas of the planet.

試題答案：

太陽對地球表面不均勻的加熱造成了氣壓差。而這種氣壓差造成了風(fēng)在地球表面的流動?？茖W(xué)家通過使用風(fēng)車和風(fēng)力渦輪機(jī)將風(fēng)能轉(zhuǎn)化成電能。渦輪機(jī)吸收空氣動能并將其轉(zhuǎn)換成機(jī)械能。每個風(fēng)車都有和發(fā)動機(jī)相連的葉片。這些葉片轉(zhuǎn)得越快發(fā)動機(jī)產(chǎn)生的能量越多。在某些恒定有風(fēng)的地方，你會發(fā)現(xiàn)風(fēng)力發(fā)電場和小型的風(fēng)力發(fā)電機(jī)。在這些發(fā)電場里有數(shù)百個渦輪機(jī)，它們足夠?yàn)檎麄€社區(qū)提供電力。小型的風(fēng)力發(fā)電機(jī)是為個別家庭提供電力的。和太陽能相似，風(fēng)能不能被持續(xù)使用。世界上有些地方?jīng)]有恒定的風(fēng)。在像風(fēng)力很強(qiáng)的山口這種地方，風(fēng)并不是持續(xù)的。因此，只有地球上的某些區(qū)域才有可靠的風(fēng)能。

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