but it's happened also in a relatively recent time frame

在近现代当我们考虑美国人的食谱
when we think about the American diet and what people are eating,

当然也包括全世界的食谱
but also the world diet of course.

同样在发生着这些变革
Here is a picture of a cover from the journal--the magazine

这是来自《经济学人》杂志的一篇关于
The Economist who were writing about food and nutrition in modern times

现代食品和营养的报道
and they created this graphic for the website

他们为网站制作了这张图
to show the evolution of humans.

来演示人类的演化过程
They show these as some of the first stages

把这定义为第一阶段
and then intermediate changes they depict it as this,

这是中间阶段
and then the final one is this.

再是最终阶段
Notice the large beverage in this fellow's left hand.

注意看那人左手握的大瓶装饮料
This is a really pretty dramatic change in human evolution

在人类演化中这是个戏剧性的变化