题目内容：

英语翻译
The six-hour operation did not go well:after weeks in which his family kept a bedside vigil,joined by senior officials
这里“ joined by senior officials”何解?

优质解答

长达6小时的手术效果不很好,在随后的数星期里,他家人为他守夜,有高级官员参与.
joined by senior officials=which was joined by senior officials,前者为过去分词作后置定语,其意义相当于后面的定语从句
我汉语不好,大体意义,不影响你理解吧!