LadyLee的學習筆記小行星

tip-off  n. 情報; 爆料; 跳球，開球 場上用語; 密報;警告   
  n.
      1. inside information that something is going to happen
      2. the act of starting a basketball game with a jump ball
    v.
      1. give insider information or advise to

a secret warning or piece of secret information

告密；通風報信；密報

· Acting on a tip-off, the police arrested the drug dealers. 
  警方根據密報採取行動，逮捕了毒品販子。

· Following a tip-off from a friend, we sold all our shares in the company.
  根據一位元朋友透露的消息，我們出售了手中該公司的所有股份。