Some artists deliberately react against established artistic conventions.

react 是动词，意思是"反应、回应"，前缀 re- 表示"回"，act 表示"行动"。 against 是介词，意思是"反对、对抗"。 react against 这个短语表示"反抗、抵制"，指对某种既定规则或传统采取反对态度。