張口結舌,目瞪口呆,垂頭喪氣
sb's jaw dropped / fell / sagged
(突然吃驚或失望得)張口結舌,目瞪口呆,垂頭喪氣
used to say that sb suddenly looked surprised, shocked or disappointed
釋義來自《牛津高階英漢雙解詞典》第 9 版