gravitation [ˌɡrævɪˈteʃən]

例句:

• Classical Mechanics models gravitation as an imaginary attractive force.
  来自SA
• Thus gravitation appears as a purely quantum mechanic phenomen.
  来自SA
• The sun's gravitation was bending the beam of light.
  太阳的引力使光束弯曲.
  
• It is gravitation that causes the apple to fall.
  是地心吸引力使苹果下落.
  
• By gravitation the sun and planets act and react upon one another.
  太阳与行星通过引力发挥作用并相互影响.
  
• How would one prove gravitation theory using scientific method?
  来自SA