helium [ˈhiliəm]

例句:

• Helium is a very light gas.
  氦是一种非常轻的气体。
  
• Helium is a gas used in balloons.
  氦是一种用于气球的气体.
  
• Unlike helium - 4, it cannot be produced by radioactive decay.
  与氦 - 4不同之处是, 氦-3不能由放射性衰变产生.
  
• These sound to be more common than helium novas.
  来自SA
• What in helium is responsible for the higher-pitched voice?
  来自SA
• Helium will remain helium for as long as eternity.
  来自SA