名词
中文翻译：烟石
同义词：
['coal', 'bitumen例句：1. The mine produces a variety of minerals', 'including smoke stones and coal.（该矿生产多种矿物，包括烟石和煤炭。）2. The company specializes in the mining and processing of smoke stones.（该公司专门从事烟石的开采和加工。）']
例句：
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1. The mine produces a variety of minerals, including smoke stones and coal.
该矿生产多种矿物，包括烟石和煤炭。
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2. The company specializes in the mining and processing of smoke stones.
该公司专门从事烟石的开采和加工。
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3.The smoke stone is a valuable resource for the local economy.
烟石是当地经济的重要资源。