through some typical cases
通过一些典型案例
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Through some researches on typical cases, some strategies on instructional design are found out, and several noteworthy problems in practice are put up.
通过实例研究，初步探索出了教学设计的若干方法策略，并提出了实践中应注意的几个问题。
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