back on their heels

基本解释

On her website, the tutor promises to teach women teetering in high heels how to improve their posture, reduce back pain and "achieve that gliding feeling when walking".
这位老师在她的网站上承诺，要帮助那些不懂如何穿高跟鞋的女性改善体态，减少背部疼痛，找到“走路时那种飘逸的感觉”。
After dropping the first two games to the Pistons in the Palace, the Cavs tightened their D and squeezed out three straight victories to throw the defending conference champs back on their heels.
下降后，前两场比赛，以活塞队在王宫，骑士收紧D和挤出三连胜，以手抛捍卫会议冠军回到他们的致命伤。
blog.sina.com.cn

They pushed Toyota and Honda and all the American brands back on their heels.
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This immediately drives this bully back on their heels.
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