Pionium
n. [核]π介子素(由一个π介子和一个μ子组成的短命的准原子)
🗣️ 情景例句
There's been another scandal in the Royal family.
皇室又出丑闻了。
I'm looking for a part time job.
我正在找兼职工作。
Have you hurt yourself?
你摔伤了没有？