yeastone

例句：

1. 1.Yeast is a type of fungus that can be used to make bread and other baked goods.
   酵母是一种可以用来制作面包和其他烘焙食品的真菌。
2. 2. The yeast in the dough helps it rise and become light and airy.
   面团中的酵母帮助它膨胀并变得轻盈和蓬松。
3. 3. Yeast is often used as a leavening agent in baking.
   酵母常用于烘焙中作为发酵剂。