| 单词 | optics |
|---|---|
| 音标 | 英[ˈɒptɪks] 美[ˈɑptɪks] |
| 解释 | n.光学; |
| 例句 | N-UNCOUNT 光学 Optics is the branch of science concerned with vision, sight, and light. |
| 变形 |
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