Today, rivers are controlled for many reasons, primarily to maintain reliable water supplies for daily, agricultural and industrial needs, for power generation, for navigation, and to prevent flooding.
今天，河流控制的原因有很多，主要是为了维持可靠的水资源供应，以满足日常生活、农业和工业、发电、航行的用水需要，并起到防洪作用。
To prevent flooding, we shall have to divert the river from its course.
为防止水涝，我们必须使河水改道。
It is cheaper to protect vegetation and use that vegetation to regulate water flow than it is to build a dam to prevent flooding.
相对于修坝来防洪水，保护水源地的植被，通过植被来调节水资源的时空分布成本更低。
The emergency bilge suction is used to prevent flooding of the ship.
紧急舱底水吸管，是用来防止船舶浸水的。
The emergency bilge suction is used to prevent flooding of the ship.
紧急舱底水吸管，是用来防止船舶浸水的。
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