...解，我感觉这是个系统工程，不仅要考虑到应用层面(user layer or app layer)，也要考虑到系统层面(kernel layer or system layer)，还要考虑到数据库层面(database layer)，否则可能有失偏颇。
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从订购比萨饼到管理医院及军事防御系统，计算机的使用范围广及各个层面。
They are used for everything from ordering a pizza to running hospitals and military defense systems.
把工作归为基础层面，所以你就不必花一半的时间管理你的时间系统，试着用更多的工具优化它，当你不能够保持的时候通常感觉到挫败。
Take it back to basics so you don't have to spend half your time managing your system, trying to optimize it with more and more tools and feeling defeated when you can't keep up.
转变发生在太阳系的电磁和引力层面，这些固定你们的太阳系统到一起映射着这个突变。
The shifts in the solar electromagnetic and gravitational fields that bind your solar system together are also reflecting this mutation.
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