"a circle of policement stood dumbfounded by her denial of having seen the accident"
"the flabbergasted aldermen were speechless"
"was thunderstruck by the news of his promotion"
dumbstruck的用法和样例:
例句
用作形容词 (adj.)
He was dumbstruck by the allegations. 他被这个主张吓得目瞪口呆。