科学家们担心，很快就会没有足够的水供我们使用，与我们共享这个世界的动植物同样也会没有足量的水可供使用。
Scientists worry that soon there won't be enough water for us, as well as for the animals and plants that share our world.
wikis和社区帮助创建网络的在线空间，而blogging、folksonomy和文件共享有助于跨整个社交网络社区这个虚拟世界实现信息流。
While wikis and communities help to create an online space for the networks, blogging, folksonomy and file sharing help to information flow across the virtual world of the social networking community.
wikis和社区帮助创建网络的在线空间，而blogging、folksonomy和文件共享有助于跨整个社交网络社区这个虚拟世界实现信息流。
While wikis and communities help to create an online space for the networks, blogging, folksonomy and file sharing help to information flow across the virtual world of the social networking community.
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