Rheed
abbr. Reflection High Energy Electron Diffraction 反射高能电子衍射
🗣️ 情景例句
Sit down. Sit down.
请坐。请坐吧。
One father is more than a hundred school-masters.
一个父亲胜于一百个教师。
What do people eat in England?
在英格兰，人们吃什么？