站直了,把肩膀往后放!
___Stand ___up ___straight and put your shoulders back!
她试图坐直,但很快意识到由于缺乏活动,她所有的肌肉都僵硬了。
She tried to ___sit ___up ___straight and quickly realised all her muscles were stiff from non activity.
面试期间,她记得坐直以留下好印象。
During the interview, she remembered to ___sit ___up ___straight to make a good impression.