They are trying to reduce the occurrence of caner by 50 %.
他们正在设法将癌症的产生率减少百分之五十.
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These mites carry the caner like picorna - like viruses.
这些瓦螨就携带有类微小核糖核酸病毒.
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People are arguing that the increase in lung caner was a consequence of cigarette smoking.
对肺癌患病率的增长是不是吸烟的结果人们仍在争论中.
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A clean border between the caner and healthy tissue can be difficult to find.
很难找到癌变的与健康组织间的明显界限.
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