英 [ɪnˈɡrəʊsmənt] 美 [ɪnˈɡroʊsmənt]
n. 垄断居奇；用大字写；大量收买
enˈgrossment /ɪnˈɡrəʊsmənt/
名词 a deed or other document that has been engrossed 正式缮写的文件
complete attention; intense mental effort
同义词： concentration / absorption / immersion
the mental state of being preoccupied by something
同义词： preoccupation / preoccupancy / absorption
the quality of being intent and concentrated
同义词： intentness
engross 使全神贯注；用大字体书写；正式写成（决议等）；独占；吸引
One of them is thread engrossment.
其中之一就是线程专注。
John was reading with engrossment.
约翰正在全神贯注地阅读。