So it's really the upfront cost to move to this, in terms of classroom space and developing pedagogy, and buying us top experiments.

因此搬到这种教室,才是最主要的花费，其中包括教室空间设置,开发教学模式，购买高级实验设备等。

麻省理工公开课 - 媒体、教育、市场课程节选

It's the model of investment and profit that characterized so many of Milton's own early writings, including that promise, you'll remember, to his fellow Englishmen that he would one day produce a work of literature that his countrymen would not willingly let die.

这是一种投资模式和带有很多弥尔顿早期写作特征的收益,它包括了那个诺言，你们应该记得,那个诺言指他说有一天要为自己的追随者们写一篇文学作品,他的同胞们不希望这个诺言落空。

耶鲁公开课 - 弥尔顿课程节选