To stare with wide eyes and an open mouth; to be dumbfounded or flabbergasted; to look astonished.
当魔术师变出消失的兔子时，台下的观众都瞪目哆口，不敢相信自己的眼睛。
When the magician made the rabbit disappear, the audience stared with wide eyes and open mouths, unable to believe their eyes.
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