Rescattering
二次散射; 重散射
🗣️ 情景例句
Well, it's a very easy operation, Carl.
这是个很简单的手术 Carl。
The lone sheep is in danger of the wolf.
孤独的羊难免遭狼的危险。
If you learn even a little English, you will find it usedful after you leave school.
假如你哪怕只是学一点英语，毕业后，也会发现它是有用的。