when reports came into London zoo that a wild puma had been spotted forty-five miles away .

题目

when reports came into London zoo that a wild puma had been spotted forty-five miles away .
书上的翻译是：当伦敦动物园接到报告说...
came into 在这里是什么成分?

答案

成分分析：when reports主语 came谓语 into London zoo状语
直译：当消息来到伦敦动物园时.