In 2007 the world's computers, monitors, telecoms networks, routers and the data centres that keeps the Internet running carried a carbon mouse-click of 830m tonnes of CO2.
2
由用户支付网络成本的互联网电话公司Skype，在其开办后第一个五年的注册用户就达4亿。
With the cost of the network paid for by its customers, Internet phone company Skype signed up 400 millions users in its first five years.
3
专家称，目前使用的网络协议IPv 4管理的约40亿个互联网地址，已经达到它的上限。
The currently used Internet Protocol version 4 (IPv4) manages about four billion addresses and has reached its limit, experts said.
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