overhead projector

名词 n.
中文释义

英文释义

名词 n.
  1. A projector that projects an image over the heads of the viewers onto a screen in front of them.
    — The reality is that the typical classroom teacher still uses a blackboard and chalk. Indeed, despite the excitement over high-tech devices, most classroom equipment is decidedly low-tech: small-screen television sets, mimeograph machines, monaural phonograph record players, overhead projectors with grease pencils, 16-millimeter projectors, reel-to-reel tape players, filmstrip projectors.

词形变化

overhead projectors plural
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