这项研究的研究者亚历山大·巴奇马诺夫说：“相同的味觉细胞都拥有这些机能：将二氧化碳转化为质子，当酸感刺激的时候能感应这些质子。”

"The same taste cell has all the machinery to turn carbon dioxide into protons and then detect the protons as sour taste stimuli," said Alexander Bachmanov, who was not involved in the study.

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你爱喝的碳酸汽水尝起来是酸的，这归功于一种酶，这种酶能将二氧化碳转化为酸感应细胞能察觉的质子。

The carbon dioxide in your favorite soda pop tastes sour to your tongue, thanks to an enzyme that converts CO2 into protons that sour-sensing cells can detect.

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