单词	ping pong viruses
释义	ping pong viruses 小球病毒
随便看	regional urbanizaiton level regional urbanization regional urban-space regional urban system regional urban system plan regional utility regional value engineering coordinator Regional Value Identity Regional variable Regional Variance regional variants regional variation regional variations regional variations in pronunciation regional varieties regional varieties of English regional variety Regional variety test regional vegetation map regio-nal vegetation map Regional vehicle market regional velocity control regional ventilation Regional ventilation differences regional ventilation differences due to gravity