be down in the mouth
US /bi daʊn ɪn ðə maʊθ/
UK /bi daʊn ɪn ðə maʊθ/

成语
1.
垂头丧气, 闷闷不乐
to be visibly sad or depressed
示例:
•
She's been down in the mouth ever since her pet cat went missing.
自从她的宠物猫失踪后,她一直闷闷不乐。
•
Don't be down in the mouth, things will get better.
别垂头丧气的,事情会好起来的。
在 Lingoland 学习这个单词