名词
中文翻译：贫矿
同义词：
['poor ore', 'low-gradeore']
例句：
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1. Themine is rich in minerals, but thequality of the ore is poor.
这个矿藏富含矿物，但矿石质量很差。
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2.The company has been mining for decades,but it still relies on low-gradeores.
这家公司已经开采了几十年，但它仍然依赖低品位的矿石。
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3. The miners are struggling to find high-qualityore, which is essential for theiroperations.
矿工们正在努力寻找高质量的矿石，这对于他们的运营至关重要。