旧公交车是造成城市污染的主要原因。
当然，侵蚀是造成其破坏的主要原因之一，但人类活动应承担的责任也越来越大。
Erosion, of course, is one of the key reasons for its destruction, but human activity is also increasingly responsible.
这种细菌——存在于泥土和水中，而非粪便——是造成“游泳耳”的主要原因，症状是耳朵发痒疼痛和红肿。
This germ—which is present in soil and water, not feces—is responsible for "swimmers ear", an itchy or painful inflammation of the ear.
经过生物工程改造的棉花种植场可以生产自己的抗棉铃虫杀虫剂，而棉铃虫是造成农作物歉收的主要原因，直到今年，棉铃虫的危害都很小。
Plantings of cotton bioengineered to produce its own insecticide against bollworms, a major cause of crop failure, sustained little bollworm damage until this year.
机器学习是造成这种混乱的主要原因。
Machine learning is the technology that's responsible for most of this disruption.
联合国表示，人类活动是造成这一现象的主要原因。
Human activity is the main reason for this, the United Nations (UN) said.
造成这些死亡的主要原因之一是贫穷。
在印度，腹泻和呼吸道感染是造成幼儿死亡的主要原因。
Diarrhoea and respiratory infections are the main cause for child deaths in India.
报告认为，空气品质，矿物、电力设施以及石油勘探造成的污染是印度，墨西哥和非洲人口减少的主要原因。
Air quality and pollution from mines, power plants and oil exploration have been responsible for population losses in India, Mexico and Africa, it says.
意外伤害是造成青少年死亡和残疾的一个主要原因。
Unintentional injuries are a leading cause of death and disability among young people.
世界卫生组织指出，自杀是造成全球死亡的一个主要原因，也是造成25岁以下年轻人死亡的三大原因之一。
The World Health Organization says suicide is a leading cause of death worldwide, and one of the three leading causes of death for young people under 25.
据估计食物不足是造成五岁以下儿童死亡人数中三分之一以上死亡的主要原因。
Undernutrition is estimated to be an underlying cause in more than one-third of all deaths in children under five.
海虾养殖和城市化、农业，是造成红树林消失的主要原因。
Shrimp farms have been a primary cause of mangrove loss, as well as urbanization and agriculture.
这项由国际科学论坛酒精饮料研究组发起的调查指出，酒精是诱发肝病的主要原因，过度饮酒会对肝脏造成损伤。
Alcohol remains a major cause of liver disease, said the report by the International Scientific Forum on alcohol Research. But it is excessive alcohol that does the damage.
许多科学家相信，二氧化碳是造成气候变化速度加快的主要原因之一。
Many scientists believe carbon dioxide is one of the main reasons climate change is accelerating.
与饮水相关的疾病是儿童发育不良和死亡的主要原因，造成家庭预算的巨大流失。
Waterborne disease is a major cause of stunted development and child mortality, as well as a huge drain on household budgets.
问：世界卫生组织在2001年发表了控制抗菌素耐药性的全球战略，强调过度使用和滥用抗菌素是造成耐药性的主要原因。
Q: the World Health Organization (WHO) released a global strategy to contain antimicrobial resistance in 2001, highlighting antimicrobial overuse and misuse as the chief causes of drug resistance.
他认为，可能冰川底下的海水流动是造成此次冰山断裂的主要原因之一。
The flow of sea water below the glaciers is one of the main causes of ice calvings off Greenland.
研究人员称失业率增高和工作的普遍不稳定性是造成这种趋势的主要原因。
Researchers said that a rise in unemployment and general job uncertainty was a "key factor" behind this trend.
缺乏适当弥补所有差距的资源，以及缺乏全球和地方层面上所有利益攸关者及合作伙伴的充分参与，是造成这一情况的主要原因。
This is due both to a lack of resources to properly address all the gaps, as well as a lack of involvement of all stakeholders and partners to engage at both the global and local levels.
腹泻是造成五岁以下儿童营养不良的主要原因。
Diarrhoea is a leading cause of malnutrition in children under five years old.
戈尔在他的著名的纪录片《难以忽视的真相》中认为增加的碳排放造成的有害影响是全球变暖的主要原因。
Al Gore, in his acclaimed documentary An Inconvenient Truth, makes the case for the harmful effect of increased carbon emissions with considerable impact.
此外，据估计，身体不活动是造成约21-25%的乳腺癌和结肠癌、27%的糖尿病和30%的缺血性心脏病负担的主要原因。
Moreover, physical inactivity is estimated to be the main cause for approximately 21–25% of breast and colon cancers, 27% of diabetes and approximately 30% of ischaemic heart disease burden.
卫生官员周五宣布德国北部的一个农场生产的豆芽是造成疫病爆发的主要原因，该疫病已造成30余人的死亡，患病超过3,100人。
Health officials announced on Friday sprouts from a farm in northern Germany caused the outbreak that has killed more than 30 people, sickened more than 3,100.
对纽约和洛杉矶两地交通状况的研究表明，寻找泊车位的车辆是造成交通堵塞的主要原因。
Studies of traffic congestion in New York and Los Angeles have found that cruising for parking is, in fact, a major source of gridlock.
那些一度被拍手叫好的神奇扫描仪的大量应用现在被批评是造成医疗保健开支失控的一个主要原因。
The proliferation of machinery such as fancy scanners, once applauded, is now criticised as a main cause of runaway health costs.
结核病是造成全球感染艾滋病毒患者死亡的一个主要原因，是非洲患者的首位死亡原因。
Tuberculosis is a leading cause of death among HIV-infected people worldwide, and the number one cause of death among those living in Africa.
结核病是造成全球感染艾滋病毒患者死亡的一个主要原因，是非洲患者的首位死亡原因。
Tuberculosis is a leading cause of death among HIV-infected people worldwide, and the number one cause of death among those living in Africa.
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