他们需要随后将其更改分发给其他组，所有的团队必须找到一个大家都认可的点——一组共同的测试和模拟，并据此重新进行同步。
They then need to distribute their changes to the other teams, and all of the teams must find a point of agreement — a common set of tests and mocks — to resynchronize against.
图5演示了由一组后台服务和模拟器共同支持的系统的逻辑视图。
Figure 5 illustrates a logical view of a system supported by a combination of live back-end services and simulators.
在半虚拟化模式中，来宾操作系统和hypervisor能够共同合作，让模拟更加高效。
In the paravirtualization scheme, the guest and the hypervisor can work cooperatively to make this emulation efficient.
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