The Senate measure relies on the new exchanges with emphasis on U.S.states retaining flexibility, to expand coverage to self-employed Americans, to small businesses and others currently without insurance.

VOA: standard.2009.12.25

Unlimited leverage comes automatically with an option exchange. And derivative trading which made the option exchanges look like a benign event.

期权交易与无限杠杆率是与生俱来的,而且金融衍生品交易使得,期权交易看似有益。

斯坦福公开课 - 经济学课程节选