expression
while looking on in blank amazement; while gazing at it in shock
Describes a situation where one watches something unfold in stunned disbelief, unable to react. Often used when events happen too quickly or unexpectedly to intervene.
See also: あれよあれよ
あれよあれよと見る間に、彼はステージから転落した。
While we looked on in blank amazement, he fell off the stage.
あれよあれよと見る間に、火は家全体に広がった。
As we gazed in shock, the fire spread throughout the house.