随着利用虚拟世界媒介试验浸入式虚拟活动的愿望越来越强烈，公共sl网格作为业务环境的限制成为严重的障碍。

As the desire to utilize the medium of virtual worlds to experiment with immersive virtual events grew, the limitations of the public SL grid as a business environment became serious obstacles.

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接下来是细菌域，细菌作为传染疾病的媒介为人们所熟悉，但是实际上它们对于生态环境至关重要。

Then there are the bacteria—familiar as agents of disease, but actually ecologically crucial.

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媒介作为整个社会系统之子系统，有其独特的内外环境。

Media, as a subsystem of the entire social system, has its distinctive circumstance.

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