It has become an invaluable tool for spreading breaking news and played a major role in the recent uprisings in the Middle East.
它已经成为突发新闻传播过程中无可替代的工具，同时，还在近期的中东动乱中扮演了重要的角色。
2
The breaking and milling tool is a special tool used which is used to cut and mill a section of casing in hole so that sidetrack drilling operation can be done smoothly.
断铣工具是用来割断并磨铣井内一段套管以能够进行侧钻作业的专用工具。
3
The simple tool used for cutter to break nill and grinding the breaking nill handle in front of the cutter is introduced.