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".
這位老師在她的網站上承諾，要幫助那些不懂如何穿高跟鞋的女性改善躰態，減少背部疼痛，找到“走路時那種飄逸的感覺”。
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.
下降後，前兩場比賽，以活塞隊在王宮，騎士收緊D和擠出三連勝，以手拋捍衛會議冠軍廻到他們的致命傷。
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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