Anybody whose read a basic finance text, as a matter of fact, I think anybody who thinks about investments in a common sense fashion knows that diversification is an important fundamental tenet of portfolio management.

事实上,任何一个读过金融基础教材的人,任何一个,以正常思维来考虑投资问题的人,都知道分散投资是投资管理的,一条重要的基本原则

耶鲁公开课 - 金融市场课程节选

Most common are text, files PDF forage, tml with a lot of images, graphs and charts.

最普通的是有很多图像，表格的，文本，文件，以及PDF，TML格式文件。

麻省理工公开课 - 媒体、教育、市场课程节选