all her emotions revolted at the idea of another day trapped on the wooden seat over the water.问题如前，谢谢。
热心网友
trapped on the wooden seat over the water为分词短语,作定语修饰the idea.她十分憎恨那一天她在水上的木椅上想出来的主意。
热心网友
trapped on the wooden seat over the water修饰the idea of another day，省略从句中的主语+BE动词。