If you are preoccupied, your mind is already full, so you do not really take in the person in front of you. You might look far away, give short answers, walk past a friend.

If you are preoccupied如果你 preoccupied（心不在焉）, your mind is already full你的腦子已經被佔滿了, so you do not really take in the person in front of you所以你其實沒有真正注意到眼前這個人。You might look far away你可能會眼神放空, give short answers回答得很簡短, walk past a friend跟朋友擦身而過都沒發現。

We say preoccupied with a worry, an exam, a person, money.

We say preoccupied with我們會說 preoccupied with（滿腦子想著） a worry煩惱, an exam考試, a person某個人, money錢，這樣的東西。

It can sound a little cross ('You didn't even hear me') or simply kind, a way of noticing that someone is elsewhere. The thought got there first and is hogging the space.

It can sound a little cross這話聽起來可能有點不高興 ('You didn't even hear me')（「你根本沒聽到我說話」） or simply kind或者只是很溫和, a way of noticing that someone is elsewhere用來說某人心思飄到別的地方去了。The thought got there first那個念頭先佔了位子 and is hogging the space把空間都佔滿了。

If a chair is taken, that chair is occupied, not preoccupied. Preoccupied is for a busy mind, not a busy seat.

If a chair is taken如果一張椅子被坐了, that chair is occupied那張椅子是 occupied（被佔用）, not preoccupied不是 preoccupied。Preoccupied is for a busy mind preoccupied 講的是忙碌的腦子, not a busy seat不是忙碌的座位。

People also use it when the 'something' is not a worry at all — a hobby, a plan, a crush — anything that steals attention.

People also use it人們也會用這個字 when the 'something' is not a worry at all當那個「佔據心思的東西」根本不是煩惱時 — a hobby一個嗜好, a plan一個計畫, a crush一個暗戀對象 — anything that steals attention任何會偷走注意力的東西都算。