Variational method
[化] 变分法
🧩 词语组成解析
a. 变异的
🗣️ 情景例句
Thank you. The same to you.
谢谢。圣诞快乐！
I bought it at half price.
我花了半价买来的。
On that day everyone eats mooncakes.
过节那天大家都吃月饼。