knob -and-tube wiring是什么意思，knob -and-tube wiring的翻译，knob -and-tube wiring音标、读音、用法和例句

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knob -and-tube wiring是什么意思，knob -and-tube wiring的翻译，knob -and-tube wiring音标、读音、用法和例句_淳朴汉英词典