cash in on something
phrasal verb with cash verb [ T ] uk/kæʃ/ us/kæʃ/
（常指用不公正的手段）从…中获利，靠…赚钱；从…中捞到好处
to get money or another advantage from an event or situation, often in an unfair way
Her family have been accused of cashing in on her death. 人们指责她的家人借她的死牟利。