If you go back to this particular graphic, the interesting thing is how have humans changed and what are they like now.

如果你回过头来看这张图,思考人类是如何演化的,现在又成为什么样

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Now you're saving a few calories because you don't even have to do that, so the food environment's changed in a lot of ways.

现在不需要这样,又节省了些力气,所以说食品环境改变了很多

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

I just want to flag the thought that you can be the very same hunk of stuff, even if some of the constituent atoms have changed along the way.

我只是要树立这样一个观点,就算在过程中，改变了一些原子,还能是同一件物品。

耶鲁公开课 - 死亡课程节选

You didn't go and have another one, or another one, or another one, and now the default is a twenty-ounce bottle, so you get a sense of how those sorts of things have changed.

而不能再喝另一瓶了,根本不能一瓶接一瓶的喝,但现在的包装都是二十盎司一瓶,这种改变由此可见一斑

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选