湿地很重要因为他们也预防洪水。

Wetlands are important because they also prevent flood.

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植树是预防洪水的一种方法。

Planting trees is a way to prevent flood.

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我们将加宽河床以防洪水。

We shall have to widen out the river bed to avoid flooding.

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他们筑坝来防洪水。

They dammed the water to control flooding.

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举例来说，他们建造防洪水坝，或者把人们搬迁到安全的地方。

For example, they build DAMS or move people away to safer places.

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洪水随机模拟是防洪安全设计的新途径。

The random simulation of flood hydrographs is a new way for hydrological safety design.

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洪水随机模拟是防洪安全设计的新途径。

The random simulation of flood hydrographs is a new way for hydrological safety design.

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