adj.垂头丧气的，沮丧的，灰心失望的

She looked crestfallen after her failed audition, as if the world had suddenly lost its color.
她在试镜失败后显得垂头丧气，仿佛世界突然失去了色彩。
His once confident demeanor gave way to a crestfallen expression when he received the disappointing news.
当他收到令人失望的消息时，他那原本自信的态度变得沮丧起来。
The children's faces were crestfallen when they realized their favorite band wouldn't be performing at the festival.
当孩子们意识到他们最喜欢的乐队不会在音乐节上表演时，他们的脸上露出了失望的表情。
After losing the game, the football player slumped on the bench in a crestfallen state.
足球运动员在输掉比赛后，沮丧地瘫坐在长凳上。
The employee's hopes for a promotion were dashed when the manager announced the decision, leaving them crestfallen.
当经理宣布不晋升决定时，员工们的期待化为了泡影，他们感到非常失落。
Her heart sank as she opened the envelope containing her rejection letter, feeling utterly crestfallen.
当她打开装有拒绝信的信封时，她的心情跌入谷底，感到十分沮丧。
The crowd's cheers turned to whispers of disappointment when the star's performance was cut short due to an injury, leaving them crestfallen.
当明星因为受伤而提前结束表演时，观众的欢呼声变成了失望的低语，他们感到沮丧不已。
Seeing his best friend walk away, the loner felt a deep sense of crestfallen loneliness that seemed to follow him everywhere.
看着最好的朋友离去，孤独的人感到一种深深的沮丧，仿佛孤独如影随形。
The teacher's kind words were a ray of sunshine for the crestfallen student who had just failed a test.
老师的鼓励之词对于刚刚考试失利的学生来说，就像一道阳光，让他们从沮丧中振作起来。
The partygoers appeared crestfallen when the DJ announced it was time to end the festivities, signaling the end of their fun night.
当DJ宣布派对即将结束时，客人们显得非常沮丧，标志着他们欢乐夜晚的终结。