Neutron diffusion equation
[计] 中子扩散方程
🧩 词语组成解析
🗣️ 情景例句
It was a pleasure having you. Please come again.
和你在一起我们非常荣幸，请有空常来。
I meet the boy whose aunt is a musician.
我遇到那个男孩的姑妈是音乐家。
Forty-two years later a tunnel was actually begun.
42年以后，隧道实际已经开始建了。