abstracted
adjective formal uk/æbˈstræk.tɪd/ us/æbˈstræk.tɪd/
心不在焉的；走神的；出神的
not giving attention to what is happening around you because you are thinking about something else
He gave her an abstracted glance, then returned to his book. 他心不在焉地瞥了她一眼，又一头扎进他的书里。
Synonym: absent (NOT PAYING ATTENTION)