柯林斯词典yeast /jiːst/ (yeasts) 1. N-MASS Yeast is a kind of fungus which is used to make bread rise, and in making alcoholic drinks such as beer. 酵母 返回 yeast剑桥词典a type of fungus that is used in making alcoholic drinks such as beer and wine , and for making bread swell and become light 酵母；酵母菌 dried /fresh yeast 干／新鲜酵母 yeast extract 酵母精 返回 yeast