coal seam
中文翻译
煤层
[建] 煤层
常见例句
1
the part of a coal seam that is being cut
2
the surface soil that must be moved away to get at coal seams and mineral deposits v
3
n the surface soil that must be moved away to get at coal seams and mineral deposits n an excessive burden v burden with too much work or responsibility v load with excessive weight