在这段漫长的时期，从自由时代传承下来的古希腊思想经历了一段渐变过程。
During this long period, the Greek ideas inherited from the age of freedom underwent a gradual process of transformation.
随着文化冲突与融合的不断演进，此婚姻形式也经历了由松到紧再到严的渐变性过程。
Along with the cultural conflict evolution, this marital form also experienced from tightly to strictly.
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