ferment
verb [intransitive, transitive]to experience a chemical change because of the action of yeast or bacteria, often changing sugar to alcohol; to make something change in this way （使）发酵 Fruit juices ferment if they are kept for too long. 果汁存放过久就会发酵。 - (figurative)
A blend of emotions fermented inside her. 她百感交集，激动不已。 - ferment something
Red wine is fermented at a higher temperature than white. 红葡萄酒发酵的温度比白葡萄酒高。
Word Originlate Middle English: from Old French ferment (noun), fermenter (verb), based on Latin fermentum ‘yeast’, from fervere ‘to boil’.