Definition
to attempt to initiate a romantic or sexual relationship with someone
追求某人（想与其发展性关系）
He has been running after her, hoping to establish a relationship.
他一直追求她，希望能建立一段关系。
She doesn't like boys who just run after her.
她不喜欢那些只会追求她的男生。
At the party, he saw a charming girl and decided to run after her.
在派对上，他看到一位迷人的女孩，决定追求她。