Fima
费马(已裂变原子数与初始的总装料金属原子数之比)
🗣️ 情景例句
Do you ever go jogging?
你参加过慢跑吗？
Life is a shuttle.
生活犹如梭子。
She played basketball after school, and then walked home.
放学后她打了篮球，然后步行回家。