| 单词 | mental arithmetic |
| 释义 | Word Frequency mental arithmetic(ˈmɛntəl əˈrɪθmɪtɪk) noun calculations involving addition, subtraction, multiplication or division carried out in the mind only rather than on paper or using a device such as a calculator Practise mental arithmetic when you go out shopping. the teaching of mental arithmetic He's very good at mental arithmetic. more emphasis on mental arithmetic Many people cannot do mental arithmetic. I'm going to ask you to do some mental arithmetic. |
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