delusion of grandeur

详细解释:【医】 夸大妄想

例句：

He's got delusions of grandeur, that fellow. Thinks he's only got to crook his finger and we'll all run about to do his bidding.那个家伙真是痴心妄想，以为他只要稍微示意一下，我们就全会忙来忙去照他吩咐去干。