refrain
/rɪˈfreɪn; rɪ`fren/ n
1 lines of a song or poem which are repeated, esp at the end of each verse （歌曲或诗歌的）叠句; （尤指每节末的）反复部分, 副歌
Will you all join in singing the refrain, please? 请大家一道来唱副歌好吗?
2 tune accompanying this 副歌曲调
a haunting refrain 萦绕於心头的副歌曲调
(fig 比喻) the familiar refrain of her husband's snoring 她丈夫的习惯的鼾声.
refrain / rɪˈfreɪn; rɪ`fren/ v [I, Ipr]
~ (from sth) (fml 文) keep oneself from doing sth 克制; 抑制
refrain from comment, criticism, etc 避免评论、 批评等
refrain from smoking 克制而不吸烟
Let's hope they will refrain (from hostile action). 希望他们能克制（不采取敌对行动）.