keyword [ˈki:wɜ:rd]

例句:

• When you're studying a language, the keyword is patience.
  学习一门语言，最重要的是有耐心。
  
• The keyword here is blackwhite.
  这方面的一个关键字眼是黑白.
  
• Check scheme is above, it is the keyword inside statistical tiring - room.
  上面为截图, 是统计后台里面的关键词.
  
• I'm not saying you need to cook up a keyword soup.
  来自BBC
• The keyword is content based networking.
  来自SA
• The major metric for search result ranking became keyword density on pages.
  来自BBC