(-pp-)

1. [intransitive, transitive] to make use of a source of energy, knowledge, money, etc. that already exists
   开发，利用，发掘（已有的资源、知识、资金等）◆We need to tap the expertise and skill of the people we already have.
   我们必须利用我们现有人员的专长和技能。◆Some companies have tapped their shareholders for new cash.
   有些公司向股东募集新资金。◆The new model will allow them to tap into a far larger market.
   这一新型号将为他们赢得更大的市场。

●ˌtap sth ˈin/ˈout (informal) to put information, numbers, letters, etc. into a machine by pressing buttons
（用打字机）敲打出，键入◆Tap in your PIN number.
键入你的个人识别码。