with the tail between the legs字面意思双腿夹着尾巴，喻指 “垂头丧气” 。

【例句】
After losing the match, he walked off the court with his head down and his tail between his legs.
输掉比赛后，他垂头丧气地走下球场。

She left the office with her tail between her legs after being reprimanded by her boss.
被老板训斥后，她带着低头离开办公室。