汉语翻译：
n. 抢先占据, 先人之见, 入神
【医】 成见, 注意散漫, 心不在焉英语解释：
名词 preoccupation:

an idea that preoccupies the mind and holds the attention

the mental state of being preoccupied by something同义词：preoccupancy, absorption, engrossment

the act of taking occupancy before someone else does同义词：preoccupancy

例句：

An abnormally obsessive preoccupation or attachment; a fixation.迷恋，迷信(物)不正常地萦绕于心头的事物或情感; 固恋

A pension is not usually one of the preoccupations of an eighteen year-old!一个十八岁的人通常是不会老惦著养老金的！

His main preoccupation at that time was getting enough to eat.他那时盘算的是如何填饱肚子。

She found his preoccupation with money irritating.她发觉他心里只有钱，感到很生气。

详细解释：
pre.oc.cu.pa.tion
n.（名词）
The state of being preoccupied; absorption of the attention or intellect.
入神：全神贯注的状态；注意力或心智的专注
Something that preoccupies or engrosses the mind:
使人专注的东西：占据或吸引其思想的事物：
例句：
Money was their chief preoccupation.
钱是他们所专注的东西
Occupation of a place in advance; preoccupancy.
抢先占据：预先对某地的占据；先占