单词	backup relay
释义	backup relay noun : a secondary relay to protect a power system against faults in the event of failure of the primary relay to function as desired Word History First Known Use 1950, in the meaning defined above
随便看	outrun outrung outrunner outrunners outrunning outruns outrush outrushed outrushes outrushing outré outs outsaid outsail outsailed outsailing outsails outsang outsat outsavored outsavoring outsavors outsavour outsavouring outsavours

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