n.怪念头；异想天开；心情浮动；反复无常
He had a whimsy about flying to the moon. 他有个想飞上月球的怪念头。
Some show cars are pure whimsy, confections dreamed up by young designers at play. 展出的车型中有些纯属异想天开，只是年轻设计师们闲来无事的凭空想像。
We marvel at the whimsy of the devastation. 我们对灾难的反复无常感到吃惊。
