coalface
/ˈkəʊlfeɪs/noun
- an exposed surface of coal in a mine煤层截面, 采煤工作面。
短语
at the coalface
- engaged in the practical work in a particular field（在某领域）做实际工作的：
academics should work closely alongside the clinicians at the coalface.
学者们应该同做实际工作的临床医生密切地配合。