X-ray astronomy
X射线天文学[参较 x-ray]
🧩 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
Does he have a middle name?
他有中间名字吗？
What was the weather like yesterday?
象昨天一样的天气？
It's time you went to bed.
你早就该睡觉了。