Most Instructional Design models are variations on the more general ADDIE model, which has been in use in various forms since about 1975.
大多数指导性设计模型都是由更为通用的ADDIE模型变化而来的，该模型自1975年以来一直被以各种形式使用着。
Most Instructional Design models are variations on the more general ADDIE model, which has been in use in various forms since about 1975.
大多数指导性设计模型都是由更为通用的ADDIE模型变化而来的，该模型自1975年以来一直被以各种形式使用着。
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