最好的性能改进是从非工作状态到工作状态的转变。
The coal industry must unswervingly follow the path of safe, efficient, clean, and low-carbon development.
解释:兵器既不齐全又不锋利,实质上和没有兵器一样!
Technology in mining isn't about replacing people; it's about empowering them to do better work.
每一种语言都是思想的古老森林。