Addition and subtraction add and subtract
We do addition and subtraction in arithmetic.
在算术里,我们作加减运算。
—— 辞典例句All the locations are within a half - mile, plus or minus three - tenths.
所有的地点在半英里之内, 加减30%。
—— 给力词典精选Calculator can add and subtract as well as and divide.
计算机能够加减,也能够乘除。
—— 给力词典精选Mum: Have you learned addition , subtraction, multiplication , and division, Lucy?
妈妈: 露西,你学了加减乘除了 吗 ?
—— 给力词典精选Adjust the volume by pressing the Up or Down Volume keys.
按音量加减键选择音量大小。
—— 给力词典精选