次要情节 meaning in English

subplot
underplot

A relationship subplot
一个有关感情的次要情节
The mentally ill tend to be relegated to slapstick sub - plots , alongside a central love story
精神病问题往往成了爱情故事这个主题之外的闹剧性次要情节。
Sometimes , a single play may contain more than one theme : the main plot and the sub - plot exist side by side
有时一出简单的戏包含不止一个主题；主要情节与次要情节并行发展。