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