Definition
to adopt a posture with one's shoulders pulled back and upwards, typically indicating determination or resolve.
（表示決心已定）挺起肩膀，挺直身子
She squared her shoulders, determined to complete the challenging task.
她挺起肩膀，決心完成這項具有挑戰性的任務。
Before giving the important speech, he squared his shoulders to boost his confidence.
在發表重要演講之前，他挺起肩膀以增強自信心。
When facing criticism, she squared her shoulders, ready to defend her position.
面對批評時，她挺起肩膀，準備捍衛自己的立場。