She was staring vacantly into the room.
她茫然地朝房间里注视着。
She just stared vacantly and said things that made no sense.
她只是呆望着，嘴里说的东西也常常让人摸不着头脑。
The man was making some kind of joke, and he nodded vacantly.
那人在讲着什么笑话，他茫然地点点头。
The man was making some kind of joke, and he nodded vacantly.
那人在讲着什么笑话，他茫然地点点头。
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