flightiness

例句：

1. 1.He was accused of flightiness and lack of discipline.
   他被指控轻浮和缺乏纪律。
2. 2.The young man's flightiness made him unreliable.
   那个年轻人的轻浮使他不可信。
3. 3. She was known for her liveliness and charisma.
   她以她的活泼和魅力而闻名。