an air of mild astonishment
a look of blank astonishment
She simply could not hide her astonishment.
She gazed at him in astonishment.
Then, to my great astonishment, he started to cry.
Everyone gasped with astonishment.
He expressed astonishment at the results.
to our astonishment - к нашему удивлению
his silence has long been my astonishment - его молчание давно уже удивляет меня
1) удивление, изумление
to our ~ - к нашему удивлению
2) то, что вызывает удивление
his silence has long been my ~ - его молчание давно уже удивляет меня
• End of quote
• The feeling that accompanies something extremely surprising