... 采煤工祖：coal face 采煤工：coal digger 采煤层厚度：extracting seam thickness ...
双语例句
1
The poor man is a coaldigger.
这个可怜的人是一个采煤工。
2
Leaders attach great importance to human life coaldigger. Every year, the implementation of various initiatives to ensure the safety of human life coaldigger.