在线词典作东作东道主。语出《左传.僖公三十年》"若舍郑以为东道主,行李之往来,共其乏困,君亦无所害。"后泛称请客。拼音zuò dōng解释作东道主。语出《左传.僖公三十年》"若舍郑以为东道主,行李之往来,共其乏困,君亦无所害。"后泛称请客。英文释义to host (a dinner); to treat; to pick up the check