That's the limiting factor for both sun and wind energy.
这就是利用太阳能和风能的限制性因素。
But no matter how much we maximize crop yield per acre, the limiting factor for food production is land.
但是不管我们如何最大化粮食亩产量,最大的制约因素还是土地。
We might think that the limiting factor on many design projects is money, Brooks says, but that's not true.
布鲁克斯表示,我们总认为很多设计工程的限制因素是资金,实际上这种想法是错误的。
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