For safety the propane tank was filled completely with water during all welding procedures to prevent fire or explosion from propane fumes.

出于安全的丙烷罐是装满了水，完全在所有焊接程序，以防止火灾或爆炸的丙烷气体。

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Into the dumplings after the first open water, add a spoonful of water, cover the pot (after boiling to use small fire heating, to prevent rawish).

放入饺子后第一次水开的时候，加入一勺凉水、盖上锅盖(开锅后要改用中小火加热，以防夹生)。

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Making pit geology work well is the basic security of realizing coal mine safety. It's very important to prevent from main calamities such as water fire gas and roof.

搞好矿井地质工作，是实现煤矿安全生产的基本保障，对预防水、火、瓦斯、顶板等主要灾害有着极为重要的意义。

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Fire crews helped prevent water damaging the substation on Boxing Day which supplies about 40, 000 properties in Reading and south Oxfordshire.

BBC: Osney Island in Oxford

It said some of the gas - which is used in the site's cooling systems - may have turned into liquid as the fire service used water to prevent it dispersing.

BBC: Llangefni: Vion food factory ammonia gas leak inquiry

An operation to prevent water from flooding a hospital has been successful, North Yorkshire Fire and Rescue Service said.

BBC: Friarage Hospital flood threat recedes