評論
打印
Proteins
蛋白質
What is protein?
什么是蛋白質？
It is one of the most important nutrients, animals need.
它是一種動物所需的最重要的營養物質。
People really need a lot of protein.
人們需要大量的蛋白質。
Protein helps a person to grow cells in muscles.
蛋白質有助于人們肌肉內細胞的生長。
Without protein, we cannot stay healthy.
沒有蛋白質，我們就不能保持健康。
Eating protein is important.
食用蛋白質很重要。
However, we should not eat too much protein.
然而，我們不應該吃得太多。
Do you know why?
你知道為什么嗎？
Because our bodies cannot store protein.
因為我們人體不能儲存蛋白質。
Instead, our bodies change a new protein into fat.
相反，我們的身體會把新的蛋白質轉化成脂肪。
Therefore, we must have a balanced diet.
因此，我們要有均衡的飲食。
Where do you think we can get protein?
我們從哪兒能獲取蛋白質？
We can get protein from meat, fish and beans.
我們可以從肉類、魚類和豆類中獲取蛋白質。
They're major sources of protein.
它們是蛋白質的主要來源。
