Why is she looking so dejected?

她为什么神情如此沮丧?

《新英汉大辞典》

Looking back at the history, you have once been glorious and proud, you've also been dejected and angry.

回顾历史，曾经您骄傲过、自豪过，也曾经，您黯然过、愤怒过。

youdao

When the game was over, Chamberlain sat slumped at his locker, looking dejected.

WSJ: Jason Gay | Requiem for the Joba Mustache

Bird was last seen walking towards woods looking "dejected and hunched-shouldered", and carrying the rifle.

BBC: Derrick Bird asked 'nice day?' before shooting tourist

Whilst Mikkel Kessler left the ring after his commitments with the media, Froch hung around looking a dejected figure, but still had that willingness to speak to every requesting outlet.

BBC: man Robin Chipperfield on Froch-Watch