ADJ-GRADED [ADJ to-infinitive, ADJ that]大吃一惊的;震惊的 If you are astounded by something, you are very shocked or surprised that it could exist or happen. 大吃一惊的;震惊的
I was astounded by its beauty. [+ by]
它的美丽震撼了我。
I am astounded at the comments made by the Chief Superintendent. [+ at]