gǔ / shū / zhōng / jì / zǎi / bó / xīng / chū / xiàn / shí / cháng / bèi / rèn / wéi / shì / bù / xiáng / zhī / zhào

古书中记载，孛星出现时常被认为是不祥之兆。

Ancient books recorded that the appearance of a comet was often considered an ominous sign.