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随便看	polygamist polygamist polygamistic polygamists polygamize polygamize polygamous polygamous polygamously polygamously polygamy polygar polygarchy polygastric polygenboden polygene polygeneous polygenesis polygenesist polygenetic polygenetically polygenetically polygenic polygenic polygenically 蝉为什么会唱歌? 蝉为什么要脱壳? 蝉的一生是怎样度过的蝗虫怎样逃避敌人? 蝙蝠为什么不属于鸟? 蝙蝠为什么喜欢群居? 蝙蝠为什么在黑暗处也能飞行蝙蝠为什么是最理想的种子传播者蝙蝠为什么能在晚上飞行蝙蝠为什么要倒挂着休息 vibrato Vibrato Vibrator Vibrator Vibratorsieb Vibrieren vibrieren Vibriertisch Vibrograph Vibrometer