Arithmetic progression
[计] 等差数列; 算术数列\\n[经] 算术级数, 等差级数
🧩 词语组成解析
progression
[prə'ɡrɛʃən]
n. （事件的）连续;一系列;发展，进展;<数>级数;
🗣️ 情景例句
People are busy shopping and wrapping presents for relatives and friends before Christmas Eve.
在圣诞节前夜，人们忙着为亲朋好友买东西、包礼物。
There is a crook(=affliction,trial) in the lot of every one.
人生总有倒楣事；人生总有不如意处。
If I were you, I'd choose this product.
如果我是你，我就选择这种产品。