当飓风来到这一大片低温、干燥并且空气呈现下降趋势的地区时，它所携带的温暖、潮湿而有上升趋势的空气就会与此反作用，从而使得飓风减弱。

When the hurricane moves into this large-scale cool, dry, air-descending area, its moist, warm upwelling air is countered by it, and so it weakens.

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国家飓风中心预计西莉亚将在向北面和西面穿越太平洋过程中继续减弱。

The National Hurricane Center anticipated that Celia would continue to weaken as it tracked north and west across the Pacific Ocean.

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专家警告说，虽然艾琳娜减弱成了一级的飓风，但这个缓慢移动的风暴带来的持续大风天气依然是危险的。

While Irene has weakened to a Category 1 hurricane, experts warn that it's a large, slow-moving storm that can still be very dangerous due to sustained high winds.

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