The gradual slippage -- 'slippage' is the word used by the people in Watergate, moral slippage -- it's a gradual kind of thing, combination of things.
那种逐渐的沦丧--沦丧是人们 用在水门事件上的词，道德沦丧-- 是一种逐渐改变的东西，是多种事物结合的产物。