Variational method
[化] 变分法
🧩 词语组成解析
a. 变异的
🗣️ 情景例句
When you learn a new verb, learn its various forms.
学到了新动词时，记住它的各种形式。
I suppose I can finish the project next year.
我想我明年完成此工程。
The fire brigade was called and two fire fighter freed George using a special type of grease.
有人打电话叫来消防队，两位消防队员使用了一种特殊的润滑剂才使乔治得以解脱。