"It is complex difficult terrain, both the land and the people, it is a tribal society with a culture vastly different from what most of us are familiar with and it varies around the country, so you cannot assume what is true in one province is true in another,".

VOA: standard.2009.10.01

The bonds are auctioned off on regular dates and you cannot participate in the auction; I assume you can't.

这些债券在规定期限内拍卖,你们不能参与这些拍卖,我想你们是不行的

耶鲁公开课 - 金融市场课程节选

The second assumption we're going to make which is new is that we're going to assume that candidates cannot choose their position.

我们给出的第二个假设,这个新的假设是,候选人不能选择他们的位置

耶鲁公开课 - 博弈论课程节选