Fourier series
[计] 傅里叶级数
🧩 词语组成解析
n. 傅立叶（姓氏）；傅里叶（法国空想社会主义者, 社会改革家）
🗣️ 情景例句
I can't wait!
我盼望着那个时候！
We can offer door-to-door delivery services.
我们可提供送货上门服务。
No problem! Tell me, do I have to take them before or after meals?
“那不难！告诉我，我是在饭前还是饭后吃呢？”