成见=偏见：preconceived idea, prejudice eg: 消除成见：dipel prejudices. 抛弃一切成见：put away all preconceived ideas 偏心眼（儿）：noun. 偏心：verb. partiality, bias eg:老师对他偏心： the teacher show partiality to him. 他丝毫不偏心：he is free from any bias. 偏差：deviation, offset; deflection;departure;divergence;error eg:当心不要出偏差：take care not to deviate. hope u can understand

成见：对人或事物抱有固定不变的想法（preconceived ideas, prejudice） 偏心眼：对某人有偏爱（partiality） 偏差：对数字有高估或低估，偏离实际情况（Deviation. I think it is a statistics concept）