However, floor drain size may need to be designed to prevent water damage caused by a catastrophic failure condition.

但是地漏口径可能需要确定以防止灾难性故障所产生的水破坏。

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However, to prevent water damage in the case of a catastrophic failure, you may need to design the floor drain size to accommodate the increased discharge.

但是，为了防止万一出现的灾难性故障所导致的水破坏，可能需要确定地漏的口径以适应增加的排放。

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Officials are reinforcing levees in Illinois, Iowa, and Missouri to prevent further damage from river water that has already closed bridges and destroyed homes.

有关人员正在加固伊利诺伊州、爱奥华州和密苏里州的河堤，防止河水决堤造成进一步的损失。 洪水已经迫使桥梁关闭，房屋被毁。

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In Florida, as temperatures fell to record lows, citrus growers sprayed water on their trees to help prevent freeze damage.

VOA: special.2010.01.12

The authority will shut down power to its signal system if it appears that large amounts of water have entered the tunnels, to prevent the salty water from doing added damage to sensitive electronic relays.

WSJ: Salt Water Puts City's Subway System 'in Jeopardy'