我完全沉浸在这本小说里，一口气把它读完了。
I became so ___engrossed in the novel that I finished it in one sitting.
他完全沉浸在手头的事情里，连铃声都没听见。
He was so ___engrossed in what he was doing that he didn't hear the bell.
学生们完全沉浸在书本中，没有注意到时间。
The students were completely ___engrossed in their books and didn't notice the time.
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