请问, 逗号后那部分怎么理解? 谢谢! 请翻译一下.

题目

请问, 逗号后那部分怎么理解? 谢谢! 请翻译一下.
In eighth grade your idea of a good friend was the person who helped you pack up your stuffed animals and old baseball cards so that your room would be a “highschooler's” room, but didn't laugh at you when you finished and broke out into tears.

答案

八年级时你的好朋友的概念是：他会帮你收拾标本和旧的棒球卡片,这样你的房间就会看上去像个高中生的房间,而当你干完并大声痛哭的时候他不会朝笑你.