vacantly
adv. 神情茫然地
vacant adj. 空虛的
The man was making some kind of joke, and he nodded vacantly.
那人在講著什么笑話,他茫然地點點頭。
By the end of the game, the stadium was almost vacant.
到比賽結束的時候,體育館幾乎空了。
stare at
凝視,盯住
In the West people think it's rude to stare at a person.
在西方,人們認為盯著看人是不禮貌的。