大家在查： mmrepquotagpfs 萨弗里 breaks in 伍麦叶拉西姆雅康 molehills 杰夫·贝利柔和平滑 encumber impede hamper hinder service2

Becketal.，2001

This group created the Agile Manifesto (Beck, et al. , 2001), which has the signpost of the start of agile as a movement .