如今人们正在告别纸质票。

Now people are saying goodbye to paper tickets.

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通过精心挑选狗的父母，如今人类已经培育出许多不同品种的狗。

Today, by carefully choosing dog parents, humans have created many different kinds of dog.

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如今人类的发展已经覆盖了自然世界的大部分。

Today human development has paved over much of the natural world.

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Now you can come to your own conclusions about whether that makes sense and we'll go over different dietary approaches as we go through subsequent classes If you compare ancient humans to what modern people eat, let's look at different constituents of the diet.

关于它是否合理,你们可以自己下结论,接下来让我们会,看看不同的饮食指南,让我们对比下古人和今人的饮食,首先是饮食结构的不同

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选