Refrain

叠句

A line, or part of a line, or a group of lines, which is repeated in the course of a poem, sometimes with slight changes, and usually at the end of each stanza.

叠句是指一首诗歌中重复出现的一行、一行的部分或一组诗句，有时也会稍加变动，通常出现在每一诗节的结尾。