名词
中文翻译：煤炭开采方法同义词
同义词：
['coal mining technique', 'coal mining process']
例句：
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1. The company uses a new coal mining method to improve efficiency.
该公司采用一种新的煤炭开采方法来提高效率。
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2. This is the first time I've seen such a sophisticated coal mining method in operation.
这是我第一次看到如此复杂的煤炭开采方法在运作。
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3. The coal mining method has greatly improved the quality of the coal.
这种煤炭开采方法大大提高了煤炭的质量。