神秘果素是一种能使酸味变甜的碱性糖蛋白。

Miraculin is an alkaline glycol-protein which can transform sour to sweet taste.

youdao

它们是在自然条件下变甜的，不含人造调味品或色素。

They are naturally sweetened with no artificial flavourings or colours.

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由甜菜精炼制糖，糖是一种用来使食物变甜的奢侈品，不过也可以用来酿造最好最烈的烈酒。

SUGERREFINERY_DESC; This meant refining sugar from beets. Sugar was quite a luxury used to sweeten food, but was also used to produce the strongest and finest kinds of alcohol.

youdao

Our hypothesis is that in the United States it's less expensive to sweeten things than it is elsewhere in the world, and part of that is because of high fructose corn syrup that we'll talk about later in the class.

我们假设,在美国,让食物变甜的成本比在其他国家要低,其中一部分是因为高果糖玉米糖浆,稍后我们会讲一下这个糖浆问题

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选