It's not the most interesting physical object in the world, but it's a whole lot more interesting than a piece of chalk.

它虽不是这个世界上最吸引人的物理对象,但它能干的事比一根粉笔能干的有趣多了

死亡课程节选 : 耶鲁公开课

now we're dealing with a lot of different atoms in the molecule, much more complicated than the initial case of the cyanide ion where we only had two.

现在我们要面对的分子中有很多不同的原子，比我们一开始只有两个,原子的氰离子复杂多了。

化学原理课程节选 : 麻省理工公开课

That's $1 more than it costs now in the market, so the options are worthless unless the price of the stock goes up.

这样每股就要比市场价多花费一美元,除非股票价格增长了,否则这个期权就是没有价值的

金融市场课程节选 : 耶鲁公开课