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
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。