她雙目變得黯然無神，茫然凝神。
Her eyes dulled and she gazed blankly.
我茫然地看著面前這張紙。
I stared blankly at the paper in front of me.
他茫然地看了看她，好像不認識她似的。
He gave her a blank look, as if he had no idea who she was.
我茫然地站在那里，不知道該怎么辦。
I stood there blankly, not knowing what to do.
我和你一樣，和每個人一樣，感到茫然困惑。
I am a human being at sea like you, like everyone.