Here, in an amazing display of mechanical and chemical digestion, food gets broken down into its smallest elements, like iron, the building block of hemoglobin.

在这里，在机械和化学消化的惊人展示中，食物被分解成最小的元素，如铁，血红蛋白的组成部分。

If you were able to keep down your lunch today, you learned how mechanical and chemical digestion start in the mouth and continue in the stomach, where food is pummeled by acids and enzymes and turned into chyme.

如果你今天能不把午餐吐出来，那你就学会了机械和化学消化是如何从嘴里开始并在胃里继续的，食物被酸和酶击打并变成食糜。