Even if your team does reserve a long or late period for system test, it is important in a Value Stream Map to distinguish between the time spent doing actual testing and the time fixing code.
就算团队为系统测试保留了很长或者晚期的时间，那么在价值流图中区分花在实际测试与花在代码修复上的时间就非常的重要了。
But, unlike filter , a map always keeps every element of a list, replacing each value with the result of evaluating the code on that value.
不过，与filter不同的是，map通常保留列表的每个元素，使用对每个值应用代码得到的结果替换这些值。
The second block of code creates a hash map and populates it with name-value pairs that provide the information required to make a blog post.
第二段代码创建一个hash映射并使用名称-值对填充它，这些名称-值对提供了创作博客文章所需的信息。
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