"As long as we're consuming fossil fuels, we're putting out CO2," says Klaus Lackner, a geophysicist at Columbia University.
“只要我们还在消耗化石燃料，我们就在排放二氧化碳。”哥伦比亚大学的地球物理学家克劳斯· 拉克内说。
Dr Lackner believes, however, that air-capture technology could have near-term, small-scale commercial USES that will enable it to pay its way as it is perfected and scaled up.
但是Lackner博士相信空气捕捉技术可以实现短期、小规模的商用，只要完善和成倍扩大工艺，那么它们的花费会是合理的。
But environmentalists expect emissions-trading markets eventually to price the gas at about $50 a tonne, and Dr Lackner hopes to get the cost of his process down to $30 per tonne in the long run.
环境保护主义者呼吁碳排放权市场最终能将价格提高到50美元一吨，而Lackner博士希望在未来，他们能将这项技术的实施价格降低到每吨二氧化碳30美元以下。
But environmentalists expect emissions-trading markets eventually to price the gas at about $50 a tonne, and Dr Lackner hopes to get the cost of his process down to $30 per tonne in the long run.
环境保护主义者呼吁碳排放权市场最终能将价格提高到50美元一吨，而Lackner博士希望在未来，他们能将这项技术的实施价格降低到每吨二氧化碳30美元以下。
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