Fermat principle
[化] 费马原理
🧩 词语组成解析
[计] 费马, 费尔马
🗣️ 情景例句
Thank you. I don't believe this.
谢谢。我简直不敢相信。
I wonder if you are on my side.
我不知道你是否站在我这边。
Some children were playing games on the bank and there were some people rowing on the river.
河岸上有些孩子正在玩耍，河面上有些人正在划船。