adv.出神地，毫无表情地，茫然地，恍恍惚惚地

She stared vacantly out the window, lost in thought.
她茫然地凝视着窗外，陷入了沉思。
The old house stood vacantly, its windows shattered and door ajar.
那座老房子空荡荡地立在那里，窗户破碎，门半开着。
He answered the question vacantly, clearly not having listened to what was asked.
他茫然地回答了问题，显然没有听清楚问的是什么。
The classroom was vacantly quiet after all the students had left for the day.
学生们一天离开后，教室里空荡荡地安静下来。
She wandered vacantly through the museum, barely noticing the exhibits around her.
她恍惚地在博物馆里游荡，几乎没有注意到周围的展品。
He sat at his desk, vacantly tapping his pen against the paper, unable to write a single word.
他坐在书桌前，心不在焉地用笔轻敲着纸张，一个字也写不出来。
The once bustling marketplace now stood vacantly, a testament to times long gone.
曾经熙熙攘攘的市场现在空无一人，成为了久远时代的见证。
She gazed vacantly into the distance, her mind miles away from where her body stood.
她目光空洞地望着远方，思绪早已飘离了身体所站的地方。
The room echoed with silence as it lay vacantly, awaiting the return of its inhabitants.
房间空荡荡地回响着寂静，等待着居民的归来。
He smiled vacantly, not really understanding the joke but wanting to be polite.
他茫然地笑了笑，其实没听懂笑话，但出于礼貌还是笑了。