ㄆㄧㄥˊpíngㄏㄨㄚˊhuá

  1. 平整光滑·白居易平滑盤石。」滑潤毛糙粗糙

flat and smooth
lisse
Flachheit (S)​, Glätte (S)​, angleichen (V)​, glätten (eine Kurve ~)​ (V, EDV)​