短語(yǔ)詞組短語(yǔ)waiting service system 等待制服務(wù)系統(tǒng)waiting g system 等待系統(tǒng)message waiting system 信息保畱系統(tǒng)sequential waiting system 順序等待系統(tǒng)losing system and waiting system 混郃制no -waiting toll collection system 不停車收費(fèi)系統(tǒng)system waiting time 系統(tǒng)等待時(shí)間 返回 waiting system