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1. | Regular check-ups allow early detection when a miner's health is deteriorating. |
| 如果矿工的健康状况下降,常规的检查是能够在早期发现问题的。 |
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2. | establishments, and factories; as a safety measure, it is mixed with trace amounts of an odorant to allow |
| 甲烷的主要来源是天然气,但也可以用煤来生产。甲烷储量丰富,价格便宜,又干净,所以广泛用作家庭、商业设施以及工厂的燃料。作为一种安全措施,在甲烷中掺入痕量的有味气体以便辨识。 |
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3. | the government, the ultimate goal is to link all intrusion-detection systems into a network that will allow |
| 对于政府来说,最终目标是把所有入侵探测系统联到一个网络上,让联帮政府部门的所有入侵探测系统在网络中任何地方一有攻击发生时就马上得到更新。 |
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