chimerical

他要在月球上建游乐园的计划听起来完全是不切实际的幻想。

His plan to build an amusement park on the moon sounds completely ___chimerical.

这个神话里的生物有着狮头、羊身和蛇尾的奇异组合。

The mythical creature had a ___chimerical form with a lion's head, goat's body, and serpent's tail.