它是一个对宇宙的完整理解，为什么它是这样的和为什么它存在着，仅此而已。
It is a complete understanding of the universe, why it is as it is and why it exists at all.
对很多学生来说，这些故事好像并没有什么目的，只是为他们提供了一些灵感和忠告而已。
For many students, they seem to serve no other purpose than just provide a few words of inspiration or warning.
在真实世界里，对一个联系人来说“最近修改时间”可能没有什么真正的意义，而只是一个模型在系统中怎样被使用、跟踪、持久化的功能而已。
The modified date has no real meaning for a contact in the real world, but is a function of how the model is used, tracked, and persisted in the system.
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