A solar-powered airliner is still a distant dream, but IATA knows that pushing the boundaries of technology will be necessary to help clean up air travel.

太阳能飞机依然是遥远的梦想，但IATA知道，推进科技界线必能协助清洁航空旅行。

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Beijing is fast cleaning up ahead of the 2008 Olympics, moving out factories and introducing clean-vehicle technology: a new premium is being placed on global respectability.

北京在08年奥运前正快速清理环境，将工厂搬出去并引入清洁交通工具技术：对受到全球尊重有了新的重视。

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As the race to create clean, renewable power heats up, the solar industry is focusing on a technology in hopes of producing utility-scale energy.

随着创造清洁可再生能源竞赛地不断升温，太阳能行业正着重开发一种新技术，其有望生产出民用规模(utility - scale)的能源。

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Kramer says he spent a year remastering the old analog tapes, using state-of-the-art digital technology to clean up the sound.

NPR: Jimi Hendrix's 1969 Album Set For Release

But on Tuesday, the X Prize Foundation awarded more a million dollars for a more down-to-earth innovation: technology to clean up oil spills.

FORBES: Wendy Schmidt's X Prize Oil Cleanup Challenge Names Winners

Chrysler also has stepped up to the technology with a clean-diesel version of the 2014 Jeep Grand Cherokee, its most popular SUV.

FORBES: New Cruze Isn't Your Father's Old GM Diesel -- Or The Volt