projector

• 一种将图像或光束投射到屏幕或其他表面上的光学设备，能够放大显示画面。

An optical instrument that projects an enlarged image or a beam of light onto a screen or other surface.

1. Optical device for light projectionB1formal

   A device that projects a beam of light, often used for illumination or display purposes.

   投影仪

   • The stage was lit by a powerful projector.
   • He used a projector to highlight the speaker during the event.
   • The museum installed projectors to illuminate the artwork.

2. Image projection instrumentA2formal

   An optical instrument that projects an enlarged image or video onto a screen or surface.

   投影仪

   • The teacher used a projector to show slides during the lecture.
   • We set up the projector to watch a movie on the wall.
   • The conference room has a high-definition projector for presentations.