| 单词 | mental arithmetic |
| 释义 | mental arithmetic From Longman Dictionary of Contemporary Englishmental arithmeticˌmental aˈrithmetic noun [uncountable]HMNthe act of adding numbers together, multiplying them etc in your mind, without writing them downI did a quick bit of mental arithmetic.Examples from the Corpusmental arithmetic• A quick bit of mental arithmetic was enough to make Chrissy weak at the knees. |
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