A popular U.S. television series, Breaking Bad, told the story of an average high school chemistry teacher who became a drug dealer.

美国热门电视剧《绝命毒师》讲述了一个普通高中化老师变成毒贩故事。

He was Professor of General Chemistry at the University of St.

他是圣母普通化教授。

So, and this is something we talk about in gen chem a lot is you'll learn these basics of chemistry, but there's a lot of gray areas or things that we maybe don't know, or you can't say a hundred percent.

所以， 这是我们一般在普通化课上会讨论内容， 你会到一些化基础知识，但有很多灰色带或者是我们可能不知道事情，或者你不能说百分之百确定事情。

The combination of fusion and fission makes a really powerful bomb Nuclear weapons are so destructive because messing with subatomic particles can unleash a lot more energy then just breaking chemical bonds like typical explosives do.

聚变和裂变结合造就了一颗威炸弹。核武器之所以具有极破坏，是因为操纵亚原子粒子可以释放出比普通炸药仅仅断裂化键更多能量。

These proton rivers are a natural energy source that many  scientists believe billions of years ago, powered the first transition from  regular chemistry to living biochemistry.

这些质子流是一种天然能源， 许多科家认为， 数十亿年前，正是这种能源驱动了从普通化反应向生命生物化首次转变。

So gen chem, organic chem, biochem, and quickly realized that I'm actually very drawn to aesthetics and rejuvenation and anti-aging.

因此，我习了普通化、有机化、生物化，并很快意识到自己其实对美、回春和抗衰老领域非常感兴趣。

And I think you have heard about it probably when you took chemistry with Ms. Pittard, because you should have learned this in first semester, maybe second semester, general chemistry.

我想你可能在跟Pittard女士化时候听说过这个，因为这应该是你们在第一期，也许是第二期普通化课上习内容。