Simulators provide a convenient way to develop and test against systems that are not always available or are unable to support the full testing requirements of the system.

模拟器提供了一种方便的方式来针对并不总是可用(或者无法支持完整的系统测试需求)的系统进行开发和测试。

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To develop a test strategy and plan, it is important to know which use cases are crucial to the functioning of the system and which are not.

要开发一个测试策略和计划，了解哪些用例对于系统功能是至关紧要的，哪些不是，这是很重要的。

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Because the point of this article is using QEMU to develop and test cross-platform software, which may entail subtle hardware interactions, I emphasize system emulation.

由于本文重点是使用QEMU开发测试跨平台软件，可能会包含少量的硬件交互，我重点介绍系统模拟。

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Under state law, all of New York's roughly 700 school districts must develop a system for evaluating teachers based on a mix of standardized test scores, classroom observations and other measures.

WSJ: Albany Eyeing Ways to Shield Teacher Data