reflecting telescope       
noun [ C ] uk/rɪˌflek.tɪŋ ˈtel.ɪ.skəʊp/ us/rɪˌflek.t̬ɪŋ ˈtel.ə.skoʊp/
 反射式望远镜
a type of telescope (= a device for making objects that are far away look closer and larger) that uses a mirror or mirrors to reflect light and form an image
  Isaac Newton built the first reflecting telescope in 1668. 艾萨克 · 牛顿在1668年建造了第一台反射式望远镜。 
 Compare: refracting telescope
 - More examples
 - His mother bought him a 6-inch reflecting telescope, and he soon was involved in the school astronomy club.
 - Reflecting telescopes have big curved mirrors instead of smaller, pricier lenses.
 - Astronomers quit building big refracting telescopes when they found they could more easily and cheaply build even bigger, more powerful reflecting telescopes using mirrors.
 - I have been unable to find the spiral galaxy with my binoculars, though it is clear enough in a 15-cm reflecting telescope.