了解行为驱动开发(BDD)

摘自BDD上的*文章:

From the wikipedia article on BDD:

BDD是第二代，由内而外，基于拉动的， 多利益相关者，多规模，高度自动化，敏捷 方法.它描述了定义明确的互动周期 输出，从而交付可以运行的，经过测试的软件， 很重要.

BDD is a second-generation, outside-in, pull-based, multiple-stakeholder, multiple-scale, high-automation, agile methodology. It describes a cycle of interactions with well-defined outputs, resulting in the delivery of working, tested software that matters.

即使经过

I am not able to make sense of the adjectives used such as "outside-in", "pull-based" and "multiple-scale" even after going through the referred presentation. Please help explain.