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。
He favours a voluntary cap-and-trade system for curbing carbon emissions, which is like arguing for a voluntary income tax.
他赞成用一种自愿的碳交易体制来降低碳排放，这有些像自愿为自己的收入纳税。
Congress seems determined that a proposed cap-and-trade system for carbon emissions, which Mr Obama was counting on to raise hundreds of billions of dollars, will raise only a fraction of that.
虽然奥巴马曾指望靠“二氧化碳排放总量管制和交易系统”来筹集大笔大笔的资金，但似乎国会笃定这一提案所能筹得的只是杯水车薪而已。
Proposes reducing carbon emissions by 80 percent by 2050 by using a market-based cap-and-trade system.
建议通过基于市场的总量管制与排放交易系统，到2050年将碳排放量削减80%。
Its cap-and-trade system has set a carbon price and cut emissions modestly in the sectors it covers.
其“总量管制和交易”系统已经设订好了碳价格并在其涉及到的产业中适当的降低碳排放量。
Earlier this year the House of Representatives voted to erect a "cap-and-trade" system, which would set a ceiling on such emissions and lower it each year.
在今年早些时候，美国众议院就投票建立起“总体管制与交易”体系，这将限制每个国家二氧化碳的最高排量并将其逐年递减。
Under a cap-and-trade system, in contrast, aninvention that reduced the cost of cutting carbon emissions could itself pushdown the price of permits, reducing investors' returns.
相比来说，“限制排放与交易许可”机制在降低碳排放的成本的同时也得降低许可的价格和投资者的回报。
He favours a voluntary cap-and-trade system for curbing carbon emissions, which is like arguing for a voluntary income tax. As it happens, he favours a voluntary income tax, too.
他赞成用一种自愿的碳交易体制来降低碳排放，这有些像自愿为自己的收入纳税。
The bill aims to cut 2005 emissions levels by 17% by 2020 and has at its core a cap-and-trade system that calls for mandatory caps on greenhouse gas emissions.
这项法案意在到2020年之前将温室气体排放量从2005年水平上削减17%，而它的核心是cap - and - trade(排放限制与额度交易)体系，这个体系要求对温室气体排放施加强制性限额。
It would be funded by revenue collected from a separate Obama proposal to cap greenhouse emissions through a system of trading pollution permits.
它会资助的收入收集从一个单独的奥巴马的建议上限的温室气体排放量，通过系统的交易污染许可证。
The House voted narrowly, by 219 to 212, in favour of a climate-change bill that establishes a cap-and-trade system to reduce emissions.
美国众议院以219对212票微弱差距通过了一条与气候变化相关的法案。该法案确立了碳减排的总量封顶之下的配额交易体系。
They will almost certainly include a cap-and-trade system to control carbon emissions, but the difficulty and costs of designing a system mean no action is likely until later in the year.
其中将几乎肯定包括建立用于控制碳排放量的一个总量管制和交易监控系统，但设计这样一个系统的难度和成本决定了这项计划在今年末之前很难启动。
They will almost certainly include a cap-and-trade system to control carbon emissions, but the difficulty and costs of designing a system mean no action is likely until later in the year.
其中将几乎肯定包括建立用于控制碳排放量的一个总量管制和交易监控系统，但设计这样一个系统的难度和成本决定了这项计划在今年末之前很难启动。
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