... 误用失效-----misuse failure 误操作失效-----mishandling failure 弱质失效-----weakness failure ...
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Serious incidents and injuries may result from misuse, mishandling, or abuse of ladders and scaffolds and from failure to use safety harnesses where required.
梯子、鹰架和安全带的不正当使用、操作，甚至不用，均会造成严重的事故和伤害。
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