词汇	reference object ratio
释义	reference object ratio 参物比
随便看	nationalmuseums National Museum Wales in Cardiff national music national musical instrument national musical instruments national musicalorchestra national music appreciation national music culture national music education national music element national music ensemble National music in Liao dynasty national music instrument national music of russia national musicologist national musicology national music orchestra national musil education national mustang association National Muzzle Loading Rifle Association national myth national mythologies national name national name authority National Nanotechnology Initiative