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
Isn't that right?
对不对？
No. Forget about it. It's not important.
哪儿的话，别提这件事了，那不算什么。
Could I use your mobile phone?
能借用一下您的手机吗？