stand tall

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be proud of yourself and confident in your abilities

昂首阔步;充满自信地做事
 

Don’t give up because of one loss, remember to stand tall and try your best the next time.

不要因为一次失败就放弃，记住要挺直腰板，在下次的比赛中尽你最大的努力。

As she walked up to the podium to speak, she reminded herself to stand tall.

走向讲台发言的时候，她提醒自己要保持自信。