subterranean [ˌsʌbtəˈreniən]

例句:

• Their rooms had a frowsty, subterranean atmosphere.
  来自C. Lassalle
• This subterranean cocktail lounge turns out imaginative elixirs.
  来自WSJ
• London has 9 miles of such subterranean passages.
  伦敦像这样的地下通道有9英里长。
  
• The prothalli are saprophytic, irregularly branched, subterranean bodies.
  原叶体是腐生的, 不规则分枝的地下体.
  
• We wandered through subterranean passages.
  我们漫游地下通道.
  
• Imam learned that Zawahiri belonged to a subterranean world.
  来自NEWYORKER