China-Russiaoil cooperation is mutually beneficial and helps to guarantee each other's energy security.
中俄石油合作是互利的，可以相互保障能源安全。
2
China-Russiaoil pipeline project is the largest economic cooperation project between China and Russia at present.
中俄原油管道项目是目前中俄两国最大的经济合作项目。
3
China-Russiaoil pipeline has been formally put into operation and the bilateral cooperation in the energy fields of coal, natural gas and electricity moves forward steadily.