名词中文翻译
中文翻译：煤气
同义词：
['coal gas', 'natural gas']
例句：
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1.The mine is producing high-quality gas-fat coal.
该矿正在生产高质量的煤气和瓦斯煤。
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2. Coal gas is a popular energy source in many countries.
煤气是许多国家流行的能源来源。
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3. The company has invested heavily in the development of natural gas and coal gas.
该公司大力投资于天然气和煤气的开发。