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。
Use a broad-spectrum sunscreen of sun protection factor 15 +.
使用防晒指数15 +的广谱防晒霜。
SPF is really sunburn protection factor, even though we call it sun protection factor.
SPF实际上是“防晒伤指数”，虽然我们常称它为“防晒指数”。
Fear factor High, especially in previous sun-worshippers.
恐惧因素高，尤其是在以前的太阳崇拜者。
Fear factor High, especially in previous sun-worshippers.
恐惧因素高，尤其是在以前的太阳崇拜者。
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