| 单词 | lens |
| 释义 | lens n. 1. a piece of a transparent substance with one or (usu.) both sides curved for concentrating or dispersing light-rays esp. in optical instruments. 2. a combination of lenses used in photography. 3. Anat. = crystalline lens. 4. Physics a device for focusing or otherwise modifying the direction of movement of light, sound, electrons, etc. Derivatives lensed adj. lensless adj. Etymology: L lens lentis lentil (from the similarity of shape) |
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