astronomer [əˈstrɑ:nəmə(r)]

例句:

• Not every astronomer thinks that adjustments will be arduous.
  来自SA
• An astronomer can determine the brightness of each star.
  天文学家能够测定每颗恒星的亮度。
  
• The telescope is named after the astronomer Edwin Hubble.
  来自BBC
• A new star attracted the notice of the astronomer.
  新发现的一颗星引起了那位天文学家的注意.
  
• Finally one day, an astronomer came to our village.
  终有一日, 村子里来了一个天文学家.
  
• French astronomer Joseph-Nicolas Delisle improved on Halley's method.
  来自SA