They observed that for every molecule of carbon dioxide taken in by the plants, they lost forty-four percent less water.

VOA: special.2010.01.26

And then linked to the glycerol instead of a third fatty acid chain is a water soluble molecule, like a salt.

但连到甘油上的第三个基团不是脂肪酸链,而是一种水溶性的分子,像盐一样

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