planetarium

• 带有穹顶天花板的建筑或房间，可将恒星、行星及其他天体的图像投射到穹顶上；也指用于此类投射的光学设备。

A building or room with a domed ceiling onto which images of stars, planets, and other celestial bodies are projected, or an optical device used for such projections.

1. Building for astronomical projectionB1formalscientific

   A building or room that contains a special projector to display images of stars, planets, and other celestial objects on a large domed ceiling.

   天象仪馆

   • The school took a field trip to the planetarium to learn about constellations.
   • The planetarium's new laser show is very popular with visitors.
   • She works as a guide at the local planetarium.

2. Optical projection deviceB2formalscientific

   An optical device that projects images of celestial bodies and astronomical events onto the inner surface of a hemispherical dome.

   光学投影设备

   • The planetarium projector can simulate the night sky from any location on Earth.
   • Modern planetariums use digital projectors for high-definition shows.
   • The technician calibrated the planetarium's optical system.

3. Model of the solar systemB2formalscientific

   A model or apparatus that represents the positions and movements of the planets in the solar system.

   太阳系模型

   • The antique planetarium in the museum shows the orbits of the planets.
   • He built a small planetarium for his science project.
   • The planetarium model accurately depicts the relative sizes of the planets.

   同义词orrery