perihelion [ˌperɪ'hi:lɪrn]

例句:

• When perigee and perihelion coincide tidal range is at its greatest.
  当月球与地球到达它们的近地点和近日点的时间恰好重合时,就会引起最大的潮汐.
  
• The anomalistic year is the time between successive transits of the Earth through the perihelion.
  近点年是地球连续两次通过近日点之间的时间.
  
• How much does the direction of perihelion change each orbit?
  近日点方向使每个轨道改变了 多少 ?
  
• Kate begins the film on a day with a very significant point in our Earth's journey - Perihelion.
  来自BBC