overhead projector

英 美
  • n.高射投影仪
  • overhead n.经常开支;普通用费adj.高架的;在头上的adv.在头顶上;在空中;在高处[计算机]总开销.
  • projector n.放映机;探照灯;计划者;投影线
Noun:
  1. a projector operated by a speaker; projects the image over the speaker's head