Drawing on electronic records of seaweed from Australia's Virtual Herbarium Wernberg and colleagues looked at how seaweed communities comprising up to 300 species had changed over time.
根据澳大利亚虚拟标本馆的电子文件，Wernberg和其同事研究海藻群落的300多种类是如何随着时间的变化而变化的。
They speak of electronic town meetings and virtual communities.
他们在虚拟的电话会议上发言说话。
Secondly, discuss the media forms of communities' communication: community print media, electronic media, network media and communities' activities and etc.
其次，讨论社区传播的媒介类别：社区平面媒介、社区电子媒介、社区网络媒介、社区活动等等。
Secondly, discuss the media forms of communities' communication: community print media, electronic media, network media and communities' activities and etc.
其次，讨论社区传播的媒介类别：社区平面媒介、社区电子媒介、社区网络媒介、社区活动等等。
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