Some business groups complain that the proposed tax changes will impose new costs on U.S.firms and make them less competitive in the global marketplace.

VOA: standard.2009.05.04

They don't always rat each other out and some firms manage to collude?

为什么他们不总把对方招供出来,有些企业也能串通好呢

耶鲁公开课 - 博弈论课程节选

So you can imagine some firms trying to have an agreement.

你想一下,企业想要达成协议

耶鲁公开课 - 博弈论课程节选

Senator Christopher Dodd, who sponsored the bill, says the financial meltdown that led to the collapse and subsequent bailouts of some of the largest U.S.firms shows the current regulations are inadequate.

VOA: standard.2010.03.16

Firms that do that are, in practice, however, the minority and most mutual funds have some gimmick or some special-- they claim to be beating the market not forming the optimal portfolio.

然而实际上,这么做的公司很少,大部分共同基金都会耍些花招,或有一些特别的...,他们强调他们的收益率将强于市场平均水平,而非建立最佳投资组合

耶鲁公开课 - 金融市场课程节选