Iconal
光程函数, 程函, 哈密顿特征函数
🗣️ 情景例句
You remember Charles Maxwell, Grandpa?
你记得Charles Maxwell吗， 爷爷？
Quick! Seize that child before she falls down.
快！趁还没掉下去，快抓住那孩子。
Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available.
如果有相配的电压，可以煮少量水的便携式热水装置是有用的。