astounded

She was astounded by/at the number of people in the room.看到房间里有那么多人，她大吃一惊。

We were astounded to discover a valuable painting in the attic.发现阁楼里有一幅值钱的画，我们惊呆了。

The astounded audience watched in amazement.惊愕的观众们看得目瞪口呆。