短语词组短语Post offoce box POB 信箱a post office box 邮政局post office box 邮箱;邮政箱;邮政信箱post office box mailbox 邮筒pob post office box 邮政信箱post -box 筒型;设在路旁供寄信用的柱墩状箱private post office box 私用邮政信箱Post Office Box Delivery System 邮政信箱派递系统 返回 post box