postbox [ˈpoʊstbɑ:ks]

例句:

• The tiny Channel Island of Sark has only one postbox.
  来自BBC
• I stuck the stamp on and ran to the postbox.
  我贴上邮票,然后向邮箱跑去.
  
• The postbox leans a little bit.
  这个邮筒有点倾斜.
  
• She sealed the envelope and put it in the postbox.
  她封上信封后把信放入邮筒.
  
• We still all put our letters into the same postbox.
  来自BBC
• They were this summer's must-have street furniture, but in Sarah Stevenson's hometown they are happy without a gold postbox.
  来自BBC