Efficiency in mining isn't just about cost-cutting; it's about maximizing value while minimizing waste.
释义：一年四季都有花开不败，四时八节总有绿草长青。此句描写了自然界中的花草树木，它们在四季更迭和八个气节中都能生长茂盛，不会凋零或枯萎，象征着坚韧的生命力。
The difference between ordinary and extraordinary is that little extra.