This dam backs up the water to prevent floods.
这个坝可以拦住水，以防泛滥。
To prevent floods, make sure the hose is secure and can't rattle lose or shift out of position.
以防止洪水，确保软管是安全的和不能手摇铃失去或转移出来的立场。
Through several years of hard work, we will comprehensively improve our ability to prevent floods, control droughts, and prevent and mitigate natural disasters.
通过几年努力，全面提高防汛抗旱、防灾减灾能力。
Not only do they help collect and filter water for local aquifers and watersheds, they also help prevent flash floods and runoff that pollute waterways and worsen droughts.
树木不仅能为当地的含水层和集水区采集并过滤水，而且还有助于防止对水道造成污染并使干旱恶化的洪水暴发和溢流。
Trees do more than keep the soil in place. They also soak up water and prevent flash floods, and keep rivers clear of sediment that can kill fish.
树木所起的作用不止于保持水土。树木还吸收水份、防止洪水突发，并使河流不至于含有可杀死鱼类的泥沙沉淀。
The obligations of the two water rights are to manage the discharging water (floods etc,) and prevent and treat the returning water (polluted water and wastewater) respectively.
两种水权承担的义务分别是治理弃水(洪水等)、防治退水(废污水等)。
They give us shade and they help to prevent drought and floods.
他们给我们阴凉，他们帮助阻止干旱和洪水。
They give us shade and they help to prevent drought and floods.
他们给我们阴凉，他们帮助阻止干旱和洪水。
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