英语提问:分析以下句子结构,In not more than 80 words describe how experts
英语提问:分析以下句子结构, In not more than 80 words describe how experts came to the conclusion that the animal seen by many people really was a puma.这个复合中,我没找到主句的主语?In not more than 80 words 在句中又做什么成分?