解放以来，北京已大大改变了。
《上海轨交：甘年建成“百年网络”》，《解放日报》（北京），2010年4月15日。
"The Way to Shanghai :Take Years to Build a "Network" to Beijing", The Liberation Daily. 2010,4,15.
北京的检疫犬驯养基地先后成为中国农业大学的教学基地和解放军军犬士官学院实习基地。
The detector dog breeding and training base in Beijing has successively become the teaching base of China Agricultural University and practice base for the PLA Academy of Military Dogs and Officers.
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