Zhao Jian (left), professor at School of Economics and Management, Beijing Jiaotong University.
赵坚(左)，教授，北京交通大学经济管理学院。
That is no surprise to Zhao Jian, a professor at Northern Transport University and an outspoken -opponent of the high-speed rail plans.
北京交通大学（BeijingJiaotong University）教授赵坚对高铁计划一直公开持批评态度。
"The plans to run the trains at such high speeds posed a big safety risk, " said Zhao Jian, a professor at Beijing Transportation University.
北京交通大学的ZJ教授说，在如此高速下行驶火车带来了很高的安全风险。
Zhao Jian, Wang Feng. Laws and regulation Knowledges in energy conservation in buildings [M]. Beijing: Economics Science Press, 2005-11. (in Chinese)
赵键， 王锋。 （北京土木建筑学会） 建筑节能工程法规及相关知识[M]。 北京：经济科学出版社， 2005-11。
Zhao Jian: Because there must be some time gap between each train. If the time difference is too small, they will crash. So, you cannot operate more trains on it.
赵坚：因为每辆列车之间必须有一些时间间隔，如果间隔过小，列车就会相撞，所以不能运行再多的列车。
Zhao Jian: Because there must be some time gap between each train. If the time difference is too small, they will crash. So, you cannot operate more trains on it.
赵坚：因为每辆列车之间必须有一些时间间隔，如果间隔过小，列车就会相撞，所以不能运行再多的列车。
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