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上面酵母是活躍的發(fā)酵劑.Top yeasts are Vigorous fermenters.如果說這個(gè)種族是塊面團(tuán),這些人便是發(fā)酵劑.These men have been the leaven in the lump of the race.細(xì)菌代替酵母成為新的發(fā)酵劑,有許多優(yōu)點(diǎn).Bacteria which was a new ferment had more advantages than yeast....

“發(fā)酵劑”的英語可以翻譯為：[醫(yī)] leaven ...