X-ray background radiation
[化] X射线本底辐射
🧩 词语组成解析
ray
[rei]
n. （热或其他能量的）射线;光束，光线;微量;伞形花序柄;
vt. 放射;照射;（思想，希望等）闪现;发光;
🗣️ 情景例句
I feel strongly that I can make it.
我坚信我一定能成功。
Let me look. What do you need?
我来看看。你需要什么样的零钱？
its movement would be recorded in ink upon its surface.
纸的表面就会用墨水记录下地板运动的情况。