/,pri:kən'sepʃn; ,prikən`sɛpʃən/
n ~ (about sb/sth) opinion or idea formed in advance and not based on experience or knowledge 事先形成的观点或思想; 先入之见
*Common preconceptions about life in this district are increasingly being challenged. 原先普遍存在着对那一地区生活的成见越来越站不住脚了. Cf 参看 misconception (misconceive).

n[C]
a belief or opinion that you have already formed before you know the actual facts, and that may be wrong
preconception about/of
　I had the same preconceptions about life in South Africa that many people have.