短语词组短語Post offoce box POB 信箱a post office box 郵政侷post office box 郵箱;郵政箱;郵政信箱post office box mailbox 郵筒pob post office box 郵政信箱post -box 筒型;設在路旁供寄信用的柱墩狀箱private post office box 私用郵政信箱Post Office Box Delivery System 郵政信箱派遞系統 返回 post box