Of course it's dried milk, along with rice, some sugar and some seasonings. Like vanilla and cinnamon.

当然是奶粉，还有米饭、一些糖和一些调味料。比如香草和肉桂。

He could not trust them to the dairymaids, because if the cows were badly milked their milk would simply dry up.

他不放心把它们交给挤奶女工去挤，因为如果奶牛没被挤好，它们就会不出奶的。

Dried milk curd can be preserved for a long time.

风干的奶豆腐可以保存很久。

The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder made from cows milked both during the day and at night.

这项研究由韩国首尔的研究人员进行，研究人员用白天和晚上挤出的牛奶制成的奶粉喂老鼠。