The places Zheng passed by were where monsoon was very prominent, and the seasonal changes of prevalent wind would lend to seasonal changes of ocean current, thus greatly facilitating Zheng's voyage.

郑和航线所经历的地区是世界上季风现象最显著的地区之一。盛行风的季节性变动，带来了洋流的季节性变化，为郑和航海提供了优越的条件。

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Critics point out that wind power hasn't lowered carbon-dioxide emissions in countries where farms are prevalent.

评论家们指出在那些风力农场十分兴盛的国家风能并未降低二氧化碳的排放量。

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Also, globally, there are the challenges regarding how we attach renewable generation resources to grids, the most prevalent of which today are wind and solar.

另外，在全球范围，在利用可再生资源(目前主要是风能和太阳能)发电方面存在一些难题。

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Opponents of a Congressional plan to mandate a minimum amount of renewable energy for most utility companies say it will increase the cost of power in states where wind power is not prevalent.

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