| 单词 | dual |
| 释义 | Word Frequency dual(ˈdjuːəl) adjective 1. relating to or denoting two 2. twofold; double 3. (in the grammar of Old English, Ancient Greek, and certain other languages) denoting a form of a word indicating that exactly two referents are being referred to 4. mathematics, logic (of structures or expressions) having the property that the interchange of certain pairs of terms, and usually the distribution of negation, yields equivalent structures or expressions noun 5. grammar a. the dual number b. a dual form of a word verbWord forms: duals, dualling or dualled 6. (transitive) British to make (a road) into a dual carriageway Derived forms dually (ˈdually) adverb Word origin C17: from Latin duālis concerning two, from duo two |
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