大家好！……怎么用美语聊垂头丧气？

crestfallen垂头丧气

Oh my gosh. You look so crestfallen. What's the matter?

天哪，你看起来垂头丧气的。怎么了？

I got the results back from my doctor. It turns out my knee injury is as bad as it looks. I broke a little bone in my knee.

我得到医生的确诊结果了。我膝盖的伤和它看起来一样糟糕。膝盖上有一根小骨头骨折了。