Clide
放射性核素浓度
🗣️ 情景例句
She was in love with Donald McGrath,
她爱上了Donald McGrath，
I'm the healthiest pupil in my team.
我是我的那一队伍中最健康的学生。
I though so.Who's that beside her?
我也这样想。她旁边的那个人是谁？