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
Yes, I think so.
对，我想是的。
She feels pity for him.
她同情他。
Their sleeping bags were warm and comfortable, so they all slept soundly.
睡袋既暖和又舒服，所以，他们都睡得很香。