知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 : the act or strategy of adjusting: as a : the entire process of modifying just one's habits in modified instances or an altered surroundings in an effort to fulfill psychological, physiological, and social needs b : a purposeful and often transitory alteration by which an organism https://abbied443jrp6.wikiusnews.com/user