由于没有实地调查，没有研究报告，没有中间商，交易的成本达到了最小。
With no field surveys, no paperwork and no middlemen, transaction costs are minimal.
实地考察、网络讨论交流、动手创作、撰写研究报告及反思。
On - the - spot investigation, network discussion exchanges, begin creations and compose a research paper and introspect.
实地考察、网络讨论交流、动手创作、撰写研究报告及反思。
On - the - spot investigation, network discussion exchanges, begin creations and compose a research paper and introspect.
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