我叔叔是个囤积狂，他的车库里堆满了多年没用的旧电器。

My uncle is a ___packrat - his garage is filled with old appliances that haven't been used for years.

这款云存储应用就像个数字囤积狂，自动保存你所有的文档修改历史。

This cloud storage app works like a digital ___packrat, automatically saving every edit history of your documents.