But the usual causes of natural variability do not seem to explain the current trend, so scientists incline to the view that it is man-made.

但通常的自然变异原因似乎解释不了目前的趋势，所以，科学家倾向于认为这是人为的。

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Take a serious assessment of your overall current style, deciding if you are traditional, modern, fashion-forward, casual, hippie natural, etc.

对你的全身上下做一个认真的整体评估，看看你是属于传统的、现代的、前卫的、舒适的或者嬉皮自然的等等。

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The IPCC makes it plain that the current and projected climate change is not simply “natural variation”, but “very likely” (meaning at least 90%) the result of human activity.

IPCC指出，当前和预期内的气候变化并不简单是“自然的变化”，而非常可能是人类活动的结果（意思是至少90%）。

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The capital intensive setup and expensive drilling procedure leaves very low margins for the drilling companies at the current natural gas rates.

FORBES: Chesapeake Stock Drilling Its Way To $35

With improvements in petroleum and petroleum product shipping offsetting coal volume losses over the last two quarters, the railroad industry is capitalizing on the current natural gas boom.

FORBES: Norfolk Southern Chugs To $78 On Natural Gas And Housing Recovery

The Department of Energy has taken credit for laying the groundwork for the current natural gas boom, citing research and development dating back to the 1970s that led to today's hydraulic fracturing, or fracking, techniques of extracting gas from shale.

CNN: STORY HIGHLIGHTS