To dramatize the threat of global warming, a number of "Live Earth" 24-hour concerts are being held Saturday, July 7, across seven continents.

为了凸显全球变暖的威胁，七个国家将在7月7日举行若干24小时的Live Earth(拯救地球)现场演唱会。

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Earth Hour aims to make people aware of the threat posed by climate change and make them aware of a small movement of personal and corporate will have profound impact to the environment.

地球一小时活动旨在让人们意识到气候变化的威胁，使他们认识到个人和团体的小举动对环境产生深远的影响。

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Earth Hour aims to make people aware of the threat posed by climate change and make them aware of a small movement of personal and corporate will have profound impact to the environment.

“地球一小时”旨在使人们意识到气候变化带来的威胁，以及使他们认识到个人和企业的细小行为将对环境产生深远的影响。

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An opportunist try on the half hour demonstrated his elusive attacking threat and eye for a try, squeezing in down the right corner after Lee Briers had kicked out on the full.

BBC: World Cup scouting report

Dr. TRENBERTH: No, I just flew in about an hour ago, as it turns out, from San Antonio, where there's a threat of more freezing rain.

NPR: Can Climate Change Explain Odd Weather?