optical instrument

名词 optical instrument:

1. an instrument designed to aid vision

1. One that sells lenses, eyeglasses, and other optical instruments.
   眼镜商，光学仪器商出售光学仪器、眼镜或其它光学仪器的人
2. Microscopes and telescopes are optical instruments.
   望远镜和显微镜是光学仪器。
3. An optical instrument that uses a lens or a combination of lenses to produce magnified images of small objects, especially of objects too small to be seen by the unaided eye.
   显微镜用一个透镜或一些透镜的组合来制造小物体的放大形像的视力工具，通常用来观察肉眼看不到的物体