Many sun protection products already use ascorbic acid to counter the harmful effects of UVA exposure.

许多防晒产品中都用抗坏血酸来对抗在太阳晒后产生的伤害。

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The counter example might be that the sun explodes tomorrow or the law of nature has written in to the history of time that it will change tomorrow of all days.

这个反例可能是太阳明天爆炸,或者自然法则在历史上说,这在明天就会改变。

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In addition, retinols stimulate collagen helping to counter the effects of aging and sun.

另外，视黄醇能够促进胶原蛋白合成，抗皮肤老化，防紫外线照射。

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But there is a way to counter the increasing brightness of the Sun, the scientists believe - just increase the radius of the Earth's orbit!

BBC: Blue Marble Nasa