add-or-subtract
基本解释
- n.加或减
英汉例句
- Add or subtract a daily meal, and you soon gain or lose a surge.
一天加入/减少一餐，不久，人们就会失去/得到一次要吃的冲动。 - If born before 1930 of after 1993,add or subtract 12 to find your year.
如果早于1930年或者晚于1993年，则加减12得到代表你的年份。 - Understand and grasp the simple ways to add or subtract a number which is close to a round number.
理解并掌握一个数加上或减去接近整十、整百的数的简便算法。 - Look at the minuend and subtrahend. They both add or subtract the same number. The differences are the same.
小结：被减数减少(或增加)，减数也作相应的减少(或增加)，差不变。 - This one had numbered dials that could be turned to add or subtract columns of numbers.
这部机器上标有数字的转盘能转动来加减成串的数字。