关系模型基于谓词逻辑和集合论,为数据库管理提供了坚实的数学基础。
真相很少纯粹,也绝不简单。
Collaboration is key to solving the complex energy challenges we face today.
"Grief does not change you, Hazel. It reveals you."
Writing is a way to reclaim one's history.
让你在小时候显得很怪的东西,反而会让你在长大后成为一个很棒的人——如果你还没有失去它的话。
Confidence comes from within, and it's something you have to build every day.