Variational method
[化] 变分法
🧩 词语组成解析
a. 变异的
🗣️ 情景例句
Thank you. I appreciate your help.
谢谢！很感谢你的帮助。
Knowledge advances by steps and not by leaps.
知识只能循序渐进，不能跃进。
You must have been driving at seventy miles an hour.
你刚才一定是以每小时70英里的速度开车。