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A coveralled maintenance worker ran into the lobby .
一个穿着工作服的保养工奔进门厅。
youdao
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The cause of this accident is the mistake on changing parts by maintenance worker.
发生事故的原因是设备维修人员错误更换零部件造成的。
youdao
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The cause of this accident is the mistake on changing parts by maintenance worker.
发生事故的原因是设备维修人员错误更换零部件造成的。
youdao