stone-like coal的意思|示意

Nowadays such heavy belts for outdoor transporting of bulk materials like stone, coal or boulder, are rugged rubber belts with a steel cord traction member.

如今，这样沉重的皮带，户外运送散状物料，如石料，煤或巨石坚固耐用的橡胶带与钢线牵引成员。

Nelson picked his way along the tunnel, stepping around piles of broken stone and lumps of coal tumbled like black dice across the dusty floor.

Nelson沿着隧道小心前行，绕过成堆的碎石和许多块像黒骰子般滚落到粉尘地上的煤炭。