Innovation in coal mining isn't just about extraction—it's about doing it smarter, safer, and with greater respect for the environment.
煤炭开采的创新不仅仅是关于开采，而是更智能、更安全、更尊重环境地开采。
好的悬疑故事应该让读者一直猜测到最后，但所有线索都必须存在。
The best designs come from limitations, not endless possibilities.