zuò / wéi / cái / pàn / bì / xū / bǎo / chí / gōng / xīn / bù / néng / zhǐ / tīng / yì / fāng / de / shuō / fǎ

作为裁判，必须保持公心，不能只听一方的说法。

As a referee, you must remain impartial and cannot listen only to one side.