| 字词 | 独一无二 |
| 释义 | 独一无二 dú yī wú èr the one and only; in a class by itself (oneself); matchless; the only one of its kind; the original without copies; unique; unmatched; unparalleled; without peer: 讲硬度， 金刚钻是独一无二的。 With regard to hardness, the diamond is in a class by itself. |
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