以下为句子列表：
英文: A coal miner for most of his years, father knew only the hardest kind of life.
中文: 父亲当了大半辈子煤矿工人，饱尝着生活的艰苦。
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英文: State-owned Shenhua has already announced plans to transform itself from a coal miner into a producer of power, oil, chemicals and methanol.
中文: 国有的神华集团已宣布计划，旨在把自身从一家煤炭开采企业，变成电力、石油、化学品和甲醇生产商。
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英文: The major factors affecting gas burning in drill hole such as working skills for drill hole, reasonable air, flux coal bed gas content and so on are determined as dominating one from the model, which can provide coal miner or technician with correct sugge
中文: 计算结果表明：钻孔施工工艺、合理的配风量、煤层瓦斯含量等是防止钻孔瓦斯燃烧中优先考虑的影响因素，为煤矿防止及治理钻孔瓦斯燃烧提供了科学的理论依据。
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