词汇	Steven Mann
释义	Steven Mann 史蒂文·曼
随便看	second-hand stores secondhand tap second handtap second hand tap second-hand tap second hand tie Second-hand Transaction second-hand transactions second-hand type quartz music clock second-hand vehicle secondhand warm clothing second hand watch second hand watchclock second-hand witness second hardening secondharmonic second harmonic scattering second harmonic superheterodyne Second harmonic technique Second-harmonic wave second-harmonie generation second head second harmonic second-harmonic second harmonic AC polarography