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
It's no big deal.
这没有什么。
I'm pressed for time.
我赶时间。
Before we had time to worry about what might happen, we were back on the plain again.
我们还未来得及担心后果，车已重新开上了平地。