Arithmetical series
[机] 等差级数
🧩 词语组成解析
a. 算术的, 算术上的\\n[机] 算术的
🗣️ 情景例句
Good work, gang.
做得很好 ，大伙儿们。
What's the matter with you?
你怎么啦？
After having spent whole mornings on the river, I always go home with an empty bag.
我总是在河上呆上整整一上午，然后空着袋子回家。