Mathematical analysis
[计] 数学分析
🧩 词语组成解析
🗣️ 情景例句
I mean,
我的意思是，
It seems he's weak.
看起来他好像很虚弱。
The further off this solid obstruction, the longer time will elapse for the return of the echo.
固体障碍物越远。回声返回所用时间就越长。