watchman [ˈwɑ:tʃmən]

例句:

• The criminal throttled the watchman and robbed the bank.
  那罪犯勒死了守卫人员,抢了银行.
  来自《现代英汉综合大词典》
• The night watchman makes the rounds of the building every hour.
  巡夜人员每小时都巡视这建筑物.
  
• The watchman shone his torch at us.
  守门人用手电照着我们.
  
• So a watchman should be just the ticket.
  来自THETIMES
• "Nothing in it for me," the watchman said.
  来自NEWYORKER
• Except the Lord keepe the citie, the watchman waketh but in vain.
  来自Bible (AV): Psalms