By means of or in relation to sight, light, or optics. rare before 19th cent.
| 单词 | θ64721 |
| 释义 | the world > physical sensation > sight and vision > optical skills and techniques > [adverb] (3) optically1593 By means of or in relation to sight, light, or optics. rare before 19th cent. Subcategories:— use of instruments (2) |
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