短语词组短語pillar -box red 鮮紅的letterbox mailbox pillar -box 郵侷設置的供人投寄信件的箱子drop into a pillar -box 投寄信件post -box pillar-box 設在路旁供寄信用的柱墩狀箱Pillar Box Red 郵筒紅pillar box door structure 柱箱門結搆pillar box mailbox 郵筒 返回 pillar box