show one's capabilities 展鸿才 ; 大展身手
The second is "grandiose exhibitionism," being pompous, wanting to show off, and having an exaggerated sense of one's capabilities and talents.
第二种是“好表现行为”，这会让人变得华而不实，想要出风头，对自己的能力和天赋有夸大性的认知。
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