This dam backs up the water to prevent floods.

这个坝可以拦住水，以防泛滥。

youdao

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。

youdao

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。

youdao

Government leaders knew they had to do something to prevent such floods in the future.

VOA: special.2009.08.12

South Korea says it is accelerating a project to build its own dams near the North Korean border to prevent surprise floods like this in the future.

VOA: standard.2009.09.07

For much of the 20th century the federal government tampered with the Mississippi, to help shipping and ironically prevent floods.

ECONOMIST: Hurricane Katrina

The review is to examine why the floods in June and July were so widespread and how to predict and prevent future flooding.

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