Karen was overjoyed but astounded when she fell pregnant.卡伦得知怀孕时非常高兴, 但也很吃惊。

I was astounded at this sudden U-turn.我对这突然的180度大转弯感到震惊。

He was astounded that I felt the way I did.我会有这样的感觉, 他感到震惊。

They were astounded to hear that I was still in Sydney.他们听说我还在悉尼, 非常震惊。