Droughts and floods are becoming more extreme. These problems demand policies.

干旱和洪水则让情况更加极端，解决这些问题需要政策干预。

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Increased droughts and floods could bring crop failures and starvation in poorer parts of the world.

在世界一些贫穷的地方，持续增多的干旱和洪水会导致作物的减产和人民的饥饿。

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There is also the problem of man-made climate change, which is expected to intensify both droughts and floods.

同时，还有人为的气候变化问题，据预测，这会使旱涝灾害进一步加剧。

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Agriculture Report. Plant breeders and genetic engineers keep working to give crops the strength to resist threats like insects,diseases, droughts or floods.

VOA: special.2009.10.27

Floods,droughts,pollution and climate change have created even more problems.

VOA: special.2010.04.05

Scientists warn climate change will lead to rising sea levels, more devastating floods and hurricanes, longer lasting droughts and other extreme weather phenomena.

VOA: standard.2009.08.31

Increased groundwater abstraction, for example, may be needed in areas with unsustainable or contaminated surface water resources caused by droughts and floods.

UNESCO: THEMES

Some grapple with fragmented political structures, corruption, ethnic conflicts, political and social unrest, as well as natural disasters including devastating droughts and floods.

FORBES: Sovereign Credit Ratings: Relics Of A Bygone Era

Meyrick Gough from the firm said it needed to plan for warnings of "extremes of weather" in the future after recent droughts and floods.

BBC: Southern Water could recycle wastewater