crestfallen
crestfallenadjective- sad and disappointed
悲伤失望的;沮丧的;垂头丧气的
he came back empty-handed and crestfallen.
他两手空空,垂头丧气地回来了。
语源- late 16th cent.: figuratively, from the original use referring to a mammal or bird having a fallen or drooping crest
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