flex your muscles
US /flɛks jʊər ˈmʌslz/
UK /flɛks jʊər ˈmʌslz/

1.
展示實力, 炫耀力量
to show off your power, strength, or influence
:
•
The company decided to flex its muscles by launching a new, aggressive marketing campaign.
該公司決定透過發起一場新的、積極的行銷活動來展示其實力。
•
The politician tried to flex his muscles during the debate, but his arguments were weak.
這位政客在辯論中試圖展示他的實力,但他的論點很薄弱。