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arithmetic progression


.arithmetic pro'gression
n[C]
a set of numbers in order of value in which a particular number is added to each to produce the next (as in 2, 4, 6, 8, ...)
geometric progression
1. We do addition and subtraction in arithmetic.
    在算术里,我们作加减运算。

2. He is good at mental arithmetic.
    他擅于心算。

3. She brings me cookies, and I do her arithmetic homework for her
    她给我带来了小甜饼, 我替她算术作业."

4. Psychologist Arthur F. Kramer tested volunteers working on arithmetic problems.
    心理学家阿瑟·费·克雷默对一些正在解算术题的志愿者作过测试。

5. I do the arithmetic homework for her.
    我替她做算术课家庭作业。

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