bitcoin          
noun  finance & economics uk/ˈbɪt.kɔɪn/ us/ˈbɪt.kɔɪn/
 [ U ]比特币 
a type of cryptocurrency (= a digital currency produced by a public network rather than any government)
  Because bitcoin is completely decentralized, no one is completely invested in the long-term success of the system. 因为比特币是完全分散化控制,没有人对它的未来完全投入。 
  [ C ]比特币(货币单位) 
a single unit of this currency 
  the global supply of bitcoins 全球比特币供应量