a.

1. 宏伟的
   His scheme may look very grandiose on the surface, but it lacks details for implementation.

   他的计划表面上看起来很宏伟，但却缺乏施行的细节。

2. 浮夸的；夸张的；华而不实的
   He wrote a grandiose dissertation.

   他写了一篇华而不实的博士论文。

adj.

1. impressive or magnificent, especially pretentiously so.
2. conceived on a very ambitious scale.