President Obama says the Passover and Easter holidays are moments for people to reflect on the obligations they have to one another, no matter what their differences are.

VOA: standard.2009.04.11

What are the differences between a bacterial cell and a human cell?

人类细胞和细菌细胞,有什么不同

耶鲁公开课 - 生物医学工程探索课程节选

So let's compare what some of the similarities and differences are between hydrogen atom orbitals, which we spent a lot of time studying, and now these one electron orbital approximations for these multi-electron atoms.

很长时间的氢原子轨道和,现在多电子原子中,的单个电子轨道近似，我们可以对比，它们之间,的相似性和不同。

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Those are obvious what the differences are, embryonic stem cells are derived from embryos .

这些名称就明确揭示了它们之间的区别,胚胎干细胞是源自于胚胎

耶鲁公开课 - 生物医学工程探索课程节选

What are the sort of basic principles that lead to these differences between cells?

是怎样的基本原理,导致了细胞间的差异呢

耶鲁公开课 - 生物医学工程探索课程节选

What are some of the differences between a bacterial cell and a human cell?

人类细胞和细菌细胞,有哪些不同之处呢

耶鲁公开课 - 生物医学工程探索课程节选

There might be these, what are called epigenetic differences that I mentioned changes in the structure around DNA, and those changes lead to differences in which fraction of the total genes in the chromosomes are being expressed by a particular cell.

可能存在的差异,叫做表观遗传差异,我之前说过的DNA结构上的变化,而这些变化导致,在特定细胞中,染色体组的全部基因中,只有一部分表达出来

耶鲁公开课 - 生物医学工程探索课程节选