It sells for about 20 cents a pound, so that represents about one-third of a trillion dollars.

它的价格为20美分每磅，这价值,大约为3000多亿美元。

麻省理工公开课 - 固态化学导论课程节选

Whatever happens to me, when it's spread out over six billion plus people, it ends up divided by six billion and it becomes unobservable.

发生在我身上的事，分散到六十多亿人口上，被六十亿除,就变得难以察觉。

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And the brain is a remarkably beautiful and complex structure involving cortex, the cortex has maybe over 50 billions neurons and each one is connected to a thousand others and so forth.

大脑的构造漂亮，复杂，让人惊叹,大脑有皮层，皮层中的神经元多大500亿之多,每个神经元都与数亿千计的其他神经元相连。

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