It was as though he were a student or a young professor engrossed in his work.
Perhaps the spy would be so engrossed in his work that he wouldn't even notice an intruder.
They were engrossed in their work and never saw me.
Though they seemed engrossed in their own work, he carefully kept his whisper low.
Engrossed in his work, he forgot all about the end of the balcony behind him.
Just as she was completely engrossed in her work, the emperor came in.
"All over," said the attendant, too engrossed in his work to stop.
The young woman was deeply engrossed in her work.
She was frowning at a computer screen, totally engrossed in her work.
The old professor was still engrossed in his work.