在美国，吸烟是食管癌的主要元凶。
Cigarette smoking is a major cause of esophageal cancer in the United States.
十分罕见的严重旱灾是导致饥荒的主要元凶。
嘿，D。你知道吗，土壤变质是全球变暖的主要元凶之一？
Ya?l: Hey Don, did you know that soil deterioration is one of the main contributors to global warming?
健康的饮食可以预防或延缓糖尿病(引发心脏问题的主要元凶)的发生。
Healthy eating can help prevent or delay diabetes, a major risk factor for heart trouble.
证据与观点(家庭资产负债表和房价问题是经济复苏疲软的主要元凶)更加一致。
The evidence is more consistent with the view that problems related to household balance sheets and house prices are the primary culprits of the weak economic recovery.
保护我们共有的海洋环境已成为当今世界的一大主题，而造成海洋污染的主要元凶就是油类污染。
Nowadays Marine environment protection has become a major subject all over the world, and spill oil pollutes have been a leading role to make Marine environment contaminated.
新陈代谢症候群有何重要？有研究人员认为此症是导致过早患上心脏病的主要元凶，其危害程度比吸烟更甚。
How important is this metabolic syndrome - Some researchers believe it is such a strong contributor to early heart disease that it rivals smoking as a risk factor.
在美国最普遍的就是这种大量生产的白色、松软的面包，装在塑料袋中，一周保质期，它就是造成肥胖和糖尿病的主要元凶。
The most common form of bread in Americaethe mass-produced white, soft doughy bread in plastic bags with a shelf life of weeks is likely a major component of obesity and diabetes.
动物的排泄物释放出的气体，例如氢化硫、氨气、污染了农场周围的空气，同时，甲烷和一氧化氮则是导致全球变暖的主要元凶。
Animal excrement emits gases, such as hydrogen sulfide and ammonia, that poison the air around farms, as well as methane and nitrous oxide, which are major contributors to global warming.
一些专家认为，海洋缺氧可能是主要海洋物种灭绝的元凶。
Some experts believe that Marine dysoxia may be responsible for major oceanic extinctions.
依照疾病防控中心所说，食用烟草在美国一直是引发可预防性死亡的主要原因，85%的肺癌也把吸烟当作元凶。
Tobacco use remains the leading cause of preventable death in the United States, according to the Centers for Disease Control, and is to blame for about 85% of lung cancers.
保时捷当然是一个主要的元凶。
糖尿病肾病是糖尿病的主要并发症之一，也是终末期肾衰的元凶，其发病机制至今尚未阐明。
Diabetic nephropathy (DN) is one of the main complications of diabetes, it has become the leading cause of end stage renal failure, the pathogenesis of DN has not been completely clarified so far.
科学家发现，全球暖化是由数重温室气体造成，而主要导致气温上升的元凶是二氧化碳。
Scientists discovered that there are several greenhouse gases responsible for global warming, and the gas that causes the most warming is carbon dioxide, also called CO2.
科学家发现，全球暖化是由数重温室气体造成，而主要导致气温上升的元凶是二氧化碳。
Scientists discovered that there are several greenhouse gases responsible for global warming, and the gas that causes the most warming is carbon dioxide, also called CO2.
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