To desire to achieve multiple, often conflicting or unrealistic, goals simultaneously, such as gaining high office, immense wealth, and immortality; to be excessively greedy or deluded in one's aspirations.
他梦想着既能获得诺贝尔奖，又能成为亿万富翁，这简直是骑鹤上扬。
He dreams of both winning a Nobel Prize and becoming a billionaire; this is simply trying to achieve too many unrealistic goals at once.
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