名词短语
中文翻译：矿井和露天矿
同义词：
['mine shaft', 'open-pit mine例句：1. The mining shaft isdeep underground', 'where miners work dayand night to extract minerals.（矿井位于地下深处，矿工们日夜不停地工作以提取矿物。）2. Open-pit mining is amethod of extracting ore from thesurface of the earth', 'which can bemore environmentally friendly than underground mining.（露天矿开采是一种从地表提取矿石的方法，比地下开采更环保。）']
例句：
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1. The mining shaft isdeep underground, where miners work dayand night to extract minerals.
矿井位于地下深处，矿工们日夜不停地工作以提取矿物。
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2. Open-pit mining is amethod of extracting ore from thesurface of the earth, which can bemore environmentally friendly than underground mining.
露天矿开采是一种从地表提取矿石的方法，比地下开采更环保。
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3. The companyhas invested heavily in research and development fornew mining technologies, hoping to improve efficiencyand reduce environmental impacts.
该公司大力投资于研发新的采矿技术，希望提高效率并减少环境影响。