preconceived

/ˌpriː.kənˈsiːvd/

形容词

（想法或观点）事先认为的，预想的；（尤指）未充分考虑的
You must judge each film on its own merits, without any preconceived notions about what it's like.
你必须根据每部电影各自的优劣来作出判断，不应该先入为主，存有成见。