the glycemic index is just a number that gets attached to that.

血糖指数则仅仅是这一效应的量化体现
If you go to the web just type in glycemic index,

如果你在网上输入血糖指数
you can pull up chart

你会得到一个又一个
after chart of high and low glycemic index foods,

关于食物血糖指数高低的图表
and sometimes you get surprised by what those foods are.

有时你会被列表中的那些食物吓一跳
Let's show you graphically how this might play out.

我用图表给大家演示一下这是如何进行的
Let's create a graph here that

我们在这建立一个曲线图
on the x axis it's going to be time,

X轴代表的是时间
so time zero will be when you first take in a food

所以零时间点是你第一次进食的时间
and then one hour later, two hours later

然后一小时以后两小时以后
will be shown as you go from left to right,

是从左到右呈现在图表上的
and then we'll have blood glucose level up on the y axis.

在Y轴上是你的血糖值