以前我们班上同学有很严重的浪费现象的翻译：Previously students in our class there is a serious waste of 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Classmates before we have a very serious waste

Previously students in our class there is a serious waste of

Before in our class schoolmate has the very serious waste phenomenon

Previously we have a very serious waste of his classmates phenomenon

Previously students in our class there is a serious waste of