WARNING: the Floormen should always be aware of the tremendous force that can be applied and that the tongs could fly off suddenly, causing serious injury or fatality.
警告：钻工应该随时注意巨大的拉力会造成大钳突然飞出而造成严重的人员伤害或死亡。
Each serious pale sickness, suffocates, the electric shock, to be drowned, smokes the flesh wound and so on to arise suddenly the accident is strictly it often the reason.
各严重淡病、窒息、电击、溺水、严熏外伤等突发意外事故均为其常原因。
The pollution result that once petroleum development in Songhua river appears suddenly accident will be very serious.
松花江上石油开发中一旦出现事故其污染所造成突发事故将是十分严重的。
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