warn [wɔ:rn]

例句:

• Signs across the entrances warn all visitors to stub out their cigarettes.
  入口处的告示牌提醒游客们熄灭香烟。
  来自柯林斯例句
• He spends his spare time visiting schools to warn pupils off drugs.
  他用自己的业余时间访问学校，告诫小学生远离毒品。
  
• Many farms could go belly up, they warn.
  来自WSJ
• Lawrence kept on butting me but the referee did not warn him.
  劳伦斯不停地用头撞我，但是裁判并没有警告他。
  
• But experts warn against too much of a pop.
  来自WSJ
• Experts warn that the Malian army is not ready.
  来自VOA
• The doctor had to warn her, she must be prepared for the worse.
  医生不得不警告她,她必须做最坏的准备。
  来自《权威词典》
• He has been warned many times.
  他已被警告过多次了。
  来自《权威词典》
• If you warn the police when you go away on holiday, they will watch your house.
  你外出度假时只要通知警方,他们会照看你的房子。
  来自《权威词典》