制造商已经表示，他们将转化成为合成混合物(然而这些是以石油为基础，因此几乎没有合乎道德的解决方法)。

Already manufacturers are saying they will change to synthetic blends (though these are based on oil, so it's hardly an ethical solution).

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也有的是纯粹的化学，将纤维素分解成一种氢和碳的气体混合物，然后再将其合成更为有用的东西。

And some go for pure chemistry, breaking the cellulose down into a gaseous mixture of hydrogen and carbon monoxide before building it back up into something more useful.

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薄荷醇是一种从薄荷油中提炼或合成的一种混合物，它可以刺激大脑神经系统中对冷敏感的神经细胞。

Menthol is a compound extracted from mint oils or produced synthetically that activates cold-sensitive neurons in the nervous system.

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