It is also different from any other smoking-related study because it strictly tracks the effects of smoking without "interference" from other harmful causes such as poor diet and pollution.
这项研究与其它关于吸烟的研究不同之处还在于其严密追踪吸烟所造成的影响，而将其它诸如不良饮食习惯和污染等有害因素所造成的“干扰”排除在外。
The causes of groundwater nitrate pollution have been analyzed and the appropriate measures for preventing groundwater from nitrate pollution have also been proposed.
分析了造成地下水硝酸盐污染的原因，提出了相应的防治措施与对策。
Hogwash fat containing large quantity of animal and vegetable oil adds difficulty to be treated with, hogwash fat also causes serious environmental pollution and resource waste by sluiced directly.
餐饮泔水油中含大量的动植物油脂增加了污水处理的难度，泔水油的直接排放也造成了严重的环境污染及资源浪费。
Packaging is a means of promoting market and sales and can take the function of merchandise protection, but it also causes a certain degree of environmental pollution.
论述了包装是市场营销的一种手段，能起到保护商品的作用，也带来了不同程度的环境污染。
Coalmine spontaneous combustion has led to resources waste, meanwhile it also causes air pollution and some geological disasters.
煤田自燃导致严重资源浪费，同时又引起大气污染、地表坍塌等灾害，遥感已成为检测煤火的一种重要途径。
The leaking accident of transportation pipeline of crude oil not only causes the oil loss but also causes pollution of the environment, and furthermore may also cause serious casualties.
原油管道运输中的泄漏事故不仅造成经济损失和污染环境，还有可能带来重大的人身伤亡。
Oil gas storage and transport systems are big arteries of the petroleum industry, while they may also be the causes of fire, explosion and pollution.
油气储运系统是石油工业的大动脉，另一方面又可能是火源、爆炸源和污染源。
Oil gas storage and transport systems are big arteries of the petroleum industry, while they may also be the causes of fire, explosion and pollution.
油气储运系统是石油工业的大动脉，另一方面又可能是火源、爆炸源和污染源。
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