Tilling can remove weeds and the waste from last season's crops and help break down old plant material into fertilizer. But it can also increase the risk of soil erosion by rain or wind.

耕作可以清除杂草和上一季的农作物残茬，并且有助于将原来的农作物残茬分解成化肥，但它也会增加因风蚀、水蚀造成水土流失的风险。

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With drought comes famine, while heavy rain leads to an increased risk of malaria, Rift Valley fever and outbreaks of cholera.

干旱会带来饥荒，大雨会导致罹患疟疾、裂谷热的风险上升和霍乱的爆发。

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Winter weather conditions with snow and rain, in addition to lack of shelter and limited power supply, puts individuals at increased risk of diseases and conditions caused by exposure to cold weather.

冬天的雨雪气候，再加上缺少避难处并且电力供应有限，这使人们增加了因接触寒冷气候而带来的染病及患病危险。

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Among the many uncertainties, will the cholera outbreak spread because of the heavy rain, and the risk that stagnant water will incubate the disease?

BBC: Tropical Storm Tomas: Tense evacuations in Haiti

Heavy rain and sleet will be more likely in some eastern coastal areas, with a risk of localised flooding.

BBC: Snow and sleet forecast for Northern Ireland

The mountains will help induce more rain and will funnel the precipitation -- intensifying flooding and causing an even greater risk of mudslides.

CNN: Japan flooding: 3 deaths, levee breaks, many missing