博尔德，科罗拉多，6月30日(合众国际社)- - -一项研究报告，北极气候系统受全球变暖影响可能比以前所认为的更大，也许正接近气候变化的临界点。
BOULDER, Colo., June 30 (UPI) — climate systems in the arctic may be more affected by global warming than previously thought and may be nearing a climate-change tipping point, a study says.
北极海冰在地球气候系统中占据中心位置，并且它恶化的速度比预期的更快。
The Arctic sea ice holds a central position in the Earth's climate system and it's deteriorating faster than expected.
就在上个月，关于北极永久冻土层的甲烷气体释出及其对全球气候系统的影响，又出现了一番新闻报道，炒作，讨论和辩论的热潮。
This past month, there has been a flurry of news, speculation, discussion and debate concerning methane gas escaping from Arctic permafrost and its impact on the global climate system.
就在上个月，关于北极永久冻土层的甲烷气体释出及其对全球气候系统的影响，又出现了一番新闻报道，炒作，讨论和辩论的热潮。
This past month, there has been a flurry of news, speculation, discussion and debate concerning methane gas escaping from Arctic permafrost and its impact on the global climate system.
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