the final version of a legal document

The top copy should be retained and used as the engrossment if its terms are approved. 保留原件，如果文件内容获得批准，则原件将用作最终文本。

a feeling of great interest that makes you give something all of your attention

I watched the show with total engrossment. 我全神贯注地看了演出。

She was made more and more uncomfortable by their cosy laughing and engrossment in her medical report. 他们满面笑容并高度关注她的病情，让她（觉得）越来越不舒服。