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- Later on, Wizards &co. came out with the Subsonics feat (Song &Silence, re-printed in Complete Adventurer) which allows only your allies to hear your songs. 后來(lái)，威士蛭公司又推出了次聲專(zhuān)長(cháng)（出自歌聲和靜寂，在完美冒險者中重?。?，允許你只讓隊又聽(tīng)到你的歌聲。
- infraacousticadj. 亞聲的(聲下的;亞音頻的)
- subsonics 亞音速
