One of the most powerful of all weather systems, hurricanes are powered by the heat energy released by the condensation of water vapour.

作为所有天气系统中最强大的系统之一，飓风是由水蒸气凝结释放的热能所驱动的。

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They are subject to climatic occurrences such as weather systems, which impact upon hemispheres as a whole, and from continent to continent.

它们受到气候变化事件的影响，例如天气系统能影响整个半球和各大洲都有影响。

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North India has two main weather systems.

印度有两个主要的天气系统。

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They found the highest levels of solar activity cause small, but far-reaching effects on weather systems around the world.

VOA: special.2009.09.29

Reports say the study may lead to better predictions of temperatures, rainfall and the intensity of weather systems.

VOA: special.2009.09.29

Both events can have important effects on weather systems and climates around the world.

VOA: special.2009.09.29

What will happen to Canada if all the weather systems identified in this survey turn nasty at once?

ECONOMIST: Canada has everything, except perhaps ambition

One of the radar analysts, atmospheric scientist Paul Kucera, said the West African weather systems are poorly understood.

BBC: NEWS | Africa | Experts seek clues to hurricane births

Whether these weather systems will develop into storms, and how much damage they would do, is a matter of conjecture.

ECONOMIST: Peace, order and rocky government