一年内是否能实现这种明显的转换，我们将拭目以待。
Whether this dramatic shift is possible in a year remains to be seen.
这样能产生高效率的能源循环使用，一年内便能收回成本。
This can yield very high rates of returns, with pay back in one year.
预言：太阳能发电在两年内就能像煤电一样便宜。
Prediction: Solar Power Will Be As Cheap As Coal in Two years.
试想一个年年内战的国家，它的旅游事业能兴旺吗？
Just think a nation of every year civil war, is its tourism ability prosperous?
如果我能保持步幅，我将毕业在三年内。
If I can keep up the pace, I will graduate in just three years.
哪个都市能因在十年内获此成就而自豪？
上一次是什么时候，我们能建如此尺寸的巨大工程，而且还能在四年内完成？
When was the last time we built something this size... in four years?
如果有税收优惠政策，通常太阳能电力可以在五至十年内收回成本。
With tax incentives, solar electricity can often pay for itself in five to ten years.
如果有税收优惠政策，通常太阳能电力可以在五至十年内收回成本。
With tax incentives, solar electricity can often pay for itself in five to ten years.
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