Many folk songs have " refrains ", that is, regularly repeated independent elements attached to each stanza.

许多民歌有 “ 重复句 ”, 即每一段都有规则地重复出现的单独句.

英汉非文学 - 民俗

The Prism is constructed by two independent elements, roof and the inner climate protection.

棱柱屋由两个相对独立的部分组成:屋顶和内部气候保护层.

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