Barion
重子, 激子(激发核子)
🗣️ 情景例句
Do you think I have enough to show him?
觉得我有足够的照片给他看吗？
But wouldn't you like to spend an extra day or two here?
你们不愿意在北京多待一天吗？
What else is there to do?
还有什么事好干？