Variation principle
[计] 变分原理
🧩 词语组成解析
🗣️ 情景例句
After he eats!
等他吃饱了！
Great designs require great consideration.
宏伟的计划须要慎重考虑。
To get a full appreciation of what this means we must turn first to some recent human inventions.
要透彻理解这句话的意义，我们应先回顾一下人类最近的几项发明。