to be looking for someone or something or trying to find or get them or it

The police are after him. 警察正在追捕他。

UK I'm after a tie to go with this shirt. 我要找一条和这件衬衫相配的领带。

I'm sure she's after my husband. 我敢肯定她在打我丈夫的主意。

He's after Jane's job (= wants it for himself). 他想抢简的工作。

Being a movie star has been difficult and isn't really what I was after.

This is a great shop if what you're after is a gift that she will truly treasure.

See also: after preposition (FOLLOWING IN TIME OR PLACE)