quixotism

例句：

1. 1. He had a fantasy of becoming a famous writer.
   他有一个成为著名作家的幻想。
2. 2.Her whimsical ideas always make me laugh.
   她古怪的想法总是让我发笑。
3. 3. The story was full of whimsy and imagination.
   这个故事充满了奇思妙想和想象力。