1. 无偏见的；不偏不倚的；公正的
If you describe someone or something as unbiased, you mean they are fair and not likely to support one particular person or group involved in something.

1. without bias

Synonym: unbiassed

2. characterized by a lack of partiality

e.g. a properly indifferent jury
an unbiasgoted account of her family problems

Synonym: indifferentunbiassed