目瞪口呆　

◎ 目瞪口呆 mùdèng-kǒudāi

[gaping;stupefied;dumbstruck;be filled with shocked wonder] 瞪着眼睛说不出话来。形容吃惊或受气而发愣

令人想来都不禁惊得目瞪口呆