Today, the Internet has 575 million host computers. Expect billions of sensors on buildings and bridges to be connected to the Internet by 2020.
今天，互联网连接着5.65亿台电脑主机，预计到2020年，将有数十亿安装于建筑和桥梁上的传感器接入互联网
PITTSBURGH, the host of the next G20 summit on September 24th, is known as the "city of Bridges".
下一届20国峰会即将于9月24号召开，其东道主匹兹堡以“桥梁之城”而闻名于世。
PITTSBURGH, the host of the next G20 summit on September 24th, is known as the "city of Bridges".
下一届20国峰会即将于9月24号召开，其东道主匹兹堡以“桥梁之城”而闻名于世。
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