人们向伟大的睿帝鞠躬致敬。

The people bowed in respect to the great ___Rei.

我认识一个叫丽的日本男孩。

I know a Japanese boy named ___Rei.

根据传统日本文化，自然界的万物都有灵。

According to traditional Japanese culture, everything in nature has a ___rei.

'rei'这个前缀在日语中表达感激之情。

The prefix ___rei in Japanese expresses gratitude.