noun🔗Share煤层工作面，采煤面 The surface of coal exposed by mining, or a part of a coal seam that is currently being mined."The miners worked tirelessly at the coalface, extracting black rock for hours. "矿工们在采煤面不知疲倦地工作，连续几个小时地开采黑色的煤炭。geologymaterialindustryfuelworkChat with AIVocabulary GamePractice Reading
noun🔗Share采煤工作面，煤壁。 The end of a drift, entry, or room in a coal mine."The miners worked long hours at the coalface, extracting the valuable fuel from the rock. "矿工们在采煤工作面长时间工作，从岩石中开采出宝贵的燃料。geologymaterialindustryfuelplacetechnicalworkChat with AIVocabulary GamePractice Reading
noun🔗Share第一线, 艰苦岗位 A place where difficult or strenuous work is done."My mom works at the hospital's emergency room; she's really at the coalface of the healthcare system. "我妈妈在医院的急诊室工作，她真的是医疗系统的第一线，工作非常辛苦。workjobindustryplaceChat with AIVocabulary GamePractice Reading
noun🔗Share第一线，实际操作层面. Where practical work is done, as opposed to theoretical or managerial work."The coalface for the school's fundraising project was the team of student volunteers. "这个学校筹款项目的第一线是学生志愿者团队。workbusinessindustryjobChat with AIVocabulary GamePractice Reading
