用户发起网络调用时，通过系统调用接口进入内核的过程应该是多路的。

When a networking call is made by the user, it is multiplexed through the system call interface into the kernel.

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越来越多的进入移动世界时，用户一天中经常在几个不同的设备间工作，我们需要统一的应用和数据接口。

As we move into a world that is increasingly mobile, where users often work across several different devices in the course of their day, we need unified access to our applications and data.

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