Bernard Bilski and Rand Warsaw wanted to patent a method to let traders protect against the risk of price changes in energy markets.

VOA: special.2010.07.16

Some way of visualizing, or thinking about, where we draw the price changes from.

这是一种可视化或者思考的方式，他让我们进入了。

麻省理工公开课 - 计算机科学及编程导论课程节选

That is, share repurchase can change the units of measurement in a security and companies have to decide how leveraged the stock will be, which changes the stock price--leverage, meaning how much debt the company takes on.

即 股票的购回会改变,已发行股票的单位数量,公司需要决定,股票的杠杆效用是多少,杠杆会改变股价,杠杆指的是公司举债的多少

耶鲁公开课 - 金融市场课程节选