optical

/ˈɑptɪkəl/ 形容词 C1

中文：光学的、视觉的

Of or relating to sight; visual. · Strabismus is an optical defect.
Designed to assist or enhance sight · A microscope is an optical instrument.
Of or relating to optics. · Refraction is an optical effect.
Of or relating to visible light. · Optical telescopes don't work when it is cloudy.
Incorporating light-sensitive devices. · An optical switch opens the door automatically.

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