Specific strategies of the modeling teaching were displayed by "packing questions" teaching cases.

通过“打包问题”的具体教学实例展示了建模教学的具体实施策略。

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Next, the technical questions of the present packing, way of the gift, accepting gifts, returning gifts and requesting are briefly involved.

其次，简要涉及了礼品的包装以及赠礼、受礼、回礼的方式、要求等技术性问题。

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