Acting directly to produce an effect: an efficient cause.
直接产生效果：生效的原因。
A QA team can become much more effective and efficient by replacing an AD hoc testing approach with formal, repeatable processes that include test planning, defect cause analysis, and automated tests.
QA团队通过将包含测试计划、缺陷原因分析，和自动化测试的正式、可重复的过程，替代特殊的测试方法，以变得更加有效且高效。
These worries cause stress for just about everyone, but these problems can easily be overcome when you've found an efficient and practical solution to practice and be mentally prepared.
这些烦恼差不多给每个人带来压力，但是当你找到一个有效率的、实际的解决方法来练习，并且有心理准备时，这些问题能迎刃而解了。
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