Now we'll go back further than 10,000 years to talk about the history of food, but in those--but at 10,000 years ago several very important changes happened that have shaped to a great extent what our modern relationship with food is.
让我们回到一万多年前,来讨论饮食史,但是,一万年前,发生了一些很重要的变化,这些变化很大程度上塑造了,现代人类与食物的关系
What I'm going to talk about today is to continue our discussion about what is Biomedical Engineering and go a little bit further and we'll spend about half the class doing that, and then I want to spend the last half of the class talking about some biological structures that are very important and that you might not be familiar with.
今天我们要继续讨论,有关生物医学工程的话题,并且更深入些,这需要花上大约半节课时间,后半节课会讨论,一些非常重要的生物构造,有些你们可能不是太熟悉
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