单词	more opportune
释义	同opportune
随便看	collector resistor collector ring collector--ring collector ring brush collector-ring lead collector ring (slip-ring) collector ring {slip-ring} collector ring； slip ring collector road collector's collectors collector saturation current collector saturation resistance collector saturation voltage collector's comment collector section collector-- separated-isotope collector series resistance collector shell collectorship collectorships collector shoe collector-shoe gear collector's item collectors' item