adj.显得难过的，羞愧的
n.卑鄙的人

The dog looked hangdog after being caught stealing food from the kitchen.
这只狗在被发现从厨房偷食物后显得垂头丧气。
He had a hangdog expression on his face when he failed the exam.
他考试不及格时，脸上挂着一副垂头丧气的表情。
She felt like a complete hangdog after admitting her mistake in front of everyone.
她在大家面前承认错误后，感到非常沮丧。
His hangdog look made me feel sorry for him, even though he deserved it.
他的沮丧神情让我忍不住同情他，尽管他确实有错。
After losing the game, the team's coach walked around with a hangdog expression.
比赛失利后，教练一脸沮丧地走来走去。
The detective couldn't hide his hangdog demeanor when he realized he had missed the crucial clue.
侦探意识到自己漏掉了关键线索时，无法掩饰自己的沮丧。
The employee's hangdog countenance suggested he was overwhelmed with work and stress.
那名员工愁眉苦脸的样子表明他工作压力山大。
The student's hangdog expression told us all that he was going through a tough time academically.
学生的沮丧表情显示他在学业上正经历困难时期。
She felt like a hangdog after confessing to her boss about the project delay.
她向老板坦白项目延期后，感到十分沮丧。
His hangdog look was a stark contrast to his usual confident persona, making people realize how much this loss meant to him.
他垂头丧气的样子与平时自信的形象形成鲜明对比，让人明白这次失败对他意味着什么。