Two approaches are on offer. Some think the best way to limit emissions is to tax them; others argue for a system that sets a cap on pollution, and lets polluters trade the right to emit.

可供选择的方法有两种：有的人认为向排放物征税是最佳的限制手段；其他人支持一种对污染物施加管制的方案，并允许污染者将排放权进行交易。

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Universities seem broadly satisfied by Mr Willetts’s proposals: those which wanted the cap to go altogether will mostly be content with a much higher limit.

议员威利茨的的提议似乎受到了大学的广泛认可：那些希望学费上涨的大学甘心接受一个更高的上限。

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Countries do have a much bigger credit limit than individuals but there is still a cap on their borrowing capacity.

国家确实要比个人拥有大得多的信用额度，但是国家的借款能力还是有一个上限的。

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The dramatic disconnect between cap hits and salaries means that a team like Vancouver that routinely spends to the salary cap limit is actually paying out far more than that in actual salaries.

FORBES: NHL Salary Cap To Rise, Players Association Faces Decision

"There is no cap and no limit on it but we want to pursue onshore wind in a sensible way, " he said.

BBC: Ed Davey

There's no example of an air pollution problem anywhere in the world that has been solved without a cap or legal limit on how much of that pollution can be dumped into the sky.

FORBES: Market Man