Noun:

1. a red pillar-shaped letter box

pillare插层pillarn.柱子；支柱；核心(人物)vt.用柱支持pillared rectorite层柱累托石pillar of diaphragm[医] 膈脚Pillars of Hercules反立方幂等矩阵pillaring precursor介孔复合材料pillaring mechanism柱化机理pillar blast design矿柱爆破设计pillar of the faith正教柱石pillar safety factor矿柱安全系数pillar mining method刀柱采煤法pillar and post work柱式开采

1. There is a pillar box at the street corner.
   胡同拐角处有个邮筒。
2. You might post this letter for me if you are going near a post box.
   你可以在路过邮筒时顺便帮我把这封信发了。