A yeast cake is a mealy or doughy cake impregnated with live germs of the yeast plant, used for raising bread.

酵母饼是一种用酵母植物的活细菌浸渍的粉状或面团状的蛋糕， 用于制作面包。

It was perfectly clear that children and old people were dying for want of milk, and they had no milk because they had not land enough to feed the cattle and also raise bread and hay.

很明显，儿童和老人因缺乏牛奶而快要死了，他们没有牛奶是因为他们没有足够的土地来喂养牛群，也没有足够的土地来种植面包和干草。