vacantly
adv. 神情茫然地
例句
He looked vacantly out of the window.
他茫然地望着窗外。
《柯林斯英汉双解大词典》
One evening she was staring vacantly at an embroidered hanging.
一天晚上，她茫然地凝视着一张挂毯。
He let go of her hand and watched her float vacantly towards the storeroom door.
他让向储藏室门她的手去而且空地看了她的漂流物。
