run after someone/something
phrasal verb with run verb uk/rʌn/ us/rʌn/ running | ran | run
追逐…;追赶…
to chase someone or something that is moving away from you
Why do dogs run after cats? 为什么狗看见猫就追？
She ran after me to hand me some papers I'd dropped. 她在后面追我，把我掉的一些文件交给我。