“那时候我连大棒骨是不是厨余垃圾都不知道，”王凤琴说，“我们邻居小孩都知道。但是现在我可是个专家了。”
" At that time I didn 't even know animal bones belong to kitchen waste , while all the children in my neighborhood knew that ," Wang says ," but now I am a professional . "
大棒骨