风能利用的成功是对可再生能源的一次立见分晓的检验。
The success of wind power represents a litmus test for renewable energy.
可再生能源，尤其是风能和太阳能的价格直线下降，正日益成为人们关注的焦点。
Increasingly the story is about the plummeting prices of renewables, especially wind and solar.
但是，可再生能源，尤其是风能和太阳能的价格直线下降，正日益成为人们关注的焦点。
But increasingly the story is about the plummeting prices of renewables, especially wind and solar.
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