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Beijing is one of the most densely populated cities on the planet.
北京是地球上人口密度最高的城市之一
Around 21 million people live and work here but, at Chinese New Year,
大約兩千一百萬人在這里工作和生活，在春節(jié)時
millions flood out of the city and head to their home towns across China.
千百萬人會涌出城市，前往他們位于全國各地的家鄉(xiāng)
The total number of trips made by road in China in and around New Year is an eye-watering 3.2 billion
春運期間整個中國的公路旅行的人次會是慘不忍睹的32億人次
and a lot are made in this very city in Beijing.
很多就是在北京這個城市
Like cabbies all over the world,
就像全世界的出租車司機一樣
my taxi driver Ma Yingqi enjoys a good old moan about the traffic.
我的出租車司機對交通狀況愛發(fā)些牢騷
Managing this flow of vehicles takes a huge amount of technology.
管理這么大的車流量需要大量的科技
This state-of-the-art monitoring hub is the responsibility of Gongsun Lin.
公孫林是這個先進監(jiān)控中心的負責人
The traffic is very, very busy, is busier than in Shanghai or Shenzhen
這里的交通非常非常繁忙，比上海和深圳更繁忙
because we have a really big road network.
因為我們有一個很大的公路網(wǎng)
It is a big job moving all the persons to their hometown.
把每個人都送到家鄉(xiāng)是一項重要的工作
The roads are monitored 24 hours a day, seven days a week.
這些道路每天24小時，每周7天都被監(jiān)控著
Seven days, every day we have to be here.
每周7天，我們每天都要來這
And its cabs like the one I am in that provide the data needed to keep the traffic flowing.
正是像我乘坐的那些出租車提供了保持交通順暢的數(shù)據(jù)
We have 6,000-7,000 taxis in Beijing and everyone of them equiped with GPS.
北京有大約六七千輛出租車，每輛都裝備有GPS
Every 30 seconds, each taxis relates its position and speed back to the control room,
每隔30秒，出租車都要向控制中心提供位置和速度信息
This information helps to construct a over-all picture of the city's traffic flow in real time.
這些信息幫助構(gòu)建了這個城市整體交通流的實時畫面
The data can then be used to let drivers know
這些數(shù)據(jù)讓司機知道
where the hotspots are so they can try to avoid the jams.
熱點在哪里，以便司機來避開堵塞
