flightiness造句

I despair at the flightiness and whimsicality of my memory.
我对我的记忆的飘忽不定和稀奇古怪感到绝望.

At present, I really regret my flightiness before to know ICIBA so late.
此刻, 我真后悔我过去的浮躁,恨自己为何这么久才了解“爱词霸”.