If you are preoccupied, you are thinking a lot about something or someone, and so you hardly notice other things.
例句
Tom Banbury was preoccupied with the missing Shepherd child and did not want to devote time to the new murder...湯姆·班伯里一心尋找謝潑德家失蹤的孩子，不想花時間處理這起新的謀殺案。She looked very preoccupied.她看起來心事重重。
英漢詞典釋義
adj.
全神貫注的;入神的
You look preoccupied: what are you thinking of?看你心不在焉,在想什么?I was too preoccupied to hear the bell.當時我出神地想著心事,沒有聽見門鈴響。
英英詞典釋義
Adjective
1. deeply absorbed in thought;
"as distant and bemused as a professor listening to the prattling of his freshman class""lost in thought""a preoccupied frown"
2. having or showing excessive or compulsive concern with something;
"became more and more haunted by the stupid riddle""was absolutely obsessed with the girl""got no help from his wife who was preoccupied with the children""he was taken up in worry for the old woman"