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随便看	opthalmopathy opthalmoscopically optic optical optical activity optical amplifier optical art optical axis optical bank optical bench optical bistability optical brightener optical cavity optical center optical centre optical character reader optical character recognition optical comparator optical dating optical density optical disc optical disk optical double optical drive optical fibre 界限界面畎畎亩畏畏光喇叭花喇嘛喇嘛教喈 Strahlzerstäubungsmaschine Strahlzerstäubungsmotor Strahlzerstäubungsverfahren Strahlzwischenraum Straight_line_Cockpit stramm Strampelhöschen Strand Strandbad stranden