coal mining coal cutting excavate coal coal extraction
coal mining
coal cutting
excavate coal
coal extraction
采煤区用英文怎么说
采煤塌陷用英文怎么说
采煤塌陷区用英文怎么说
采煤塌陷地用英文怎么说
采煤学用英文怎么说
英语词典收录了最新的汉英词典和英汉词典,总共有200多万个词条,词库仍在不断更新中。