Lagrangian
[化] 拉格朗日; 拉格朗日量
🗣️ 情景例句
Never say die.
永不气馁！
No man is born wise.
聪明非天生。
He did a lot of research and travelled around the USA looking for information about his ancestors.
他做了大量的研究，在美国跑了许多地方，了解有关祖先的情况。