accretion [əˈkriʃən]

例句:

• A coral reef is built by the accretion of tiny, identical organisms.
  珊瑚礁是由许多相同的微生物不断堆积而成。
  
• Now imagine a accretion disk surrounding this blob of BH's.
  来自SA
• Every culture is an accretion.
  每一种文化都是长期积淀的结果.
  
• The multiple migration - accretion concept of Gruner deserves mention.
  格鲁纳的多次迁移 ― ―增长说受到了重视.
  
• The gradual accretion of knowledge is the way to go.
  来自SA
• Or for that matter, the accretion-process chairs.
  来自WSJ