Charmonium
[单复同]n.[核](被认为由一对粲夸克-反夸克构成的)粲素
🗣️ 情景例句
Michelle.
Michelle。
Accidents will happen in the best regulated families.
即使家规严，丑事总难免。
The force there assembled was trivial compared with the Danish horde.
他集结在那里的军队和丹麦大军相比是微不足道的，