And if the deceased is a pet, they might cross the rainbow bridge, perhaps an allusion to the Bifrost bridge of Norse mythology.

如果死者是宠物， 他们可能会穿过彩虹桥，这或许是北欧神话中彩虹桥的典故。

He guards this rainbow bridge, Bifrost, and he has his horn that he will blow when the evil forces, the jotnar or giants, they are attacking the gods.

他守卫着彩虹桥，比弗罗斯特，他有号角，当邪恶势力、巨人逼近，攻击众神的时候，他会吹响号角。