The walls are made of smooth muscle that squeeze and expand to much up the digesting food.

肠壁是由平滑肌构成的，它通过挤压和扩张以增加消化的食物。

You can just read the digest.

你可以只阅读摘要。

By eating while insulin levels are highs, the body will theoretically maximize the digested nutrients to take advantage of these benefits.

通过在胰岛素水平高的时候进食，从理论上讲，身体将最大限度地消化营养物质，从而利用这些有益的营养。

Then the blood carries the digested food with it all over the body, and everywhere it helps to form new bones, and muscles, and nerves.

然后, 血液带着这些经过消化的食物流经全身, 它们在各个地方促进新的骨头、肌肉与神经的生长。

But in every mammal, we've just got the one tube, and all that separates the digesting part from the breathing part is a little flap called the epiglottis.

但是在每一种哺乳动物中， 我们只有一根管子，将消化部分与呼吸部分分开的是一个叫做会厌的小瓣。