不管您是自己制作家庭食谱，亦或是在有选择季节性材料的餐馆里就餐，这一原则都非常适用。
This principle applies whether you're making a family recipe or dining in a restaurant where the chef selects ingredients based on their seasonal availability.
有指导原则可以以多种方式支持角色，任务，以及工作产品，包括政策，模板，范例，标准，检查列表，概念，白板，支持的材料以及等等。
Guidance exists to support roles, tasks, and work products in various ways, and may include policies, templates, examples, standards, checklists, concepts, white papers, supporting materials, etc.
原则2：了解回归测试套件中现有测试材料的质量和覆盖。
Principle 2: Understand the quality and coverage of the test material in the regression test suite.
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