The last major cause is all about overly dry air.

最后一个主要原因是空气过于干燥。

Despite their simple structure, they are a major cause of disease.

尽管它们结构很简单，它们是主要的致病因素之一。

Pollution monitoring of drinking water in nearby sites has given major cause for concern.

而周边地区的引用水污染监控却让人们忧心忡忡。

Question 22. What is a major cause of road deaths among young Americans?

美国年轻人公路死亡的主要原因是什么？

Single-use plastics such as bottles or straws are major cause of pollution.

瓶子或吸管等一次性塑料是造成污染的主要原因。

Heart disease is a major cause of mortality in the Western countries.

心脏病也是西方国家人口死亡的主要原因。

Exhaust gases from automobiles are a major cause of air pollution and global warming.

汽车尾气是造成大气污染和全球变暖的主要原因。

The major cause of forest reduction in South America is the intentional clearing of land.

南美洲森林减少的主要原因是有意的清理土地。

The major causes of these diseases are smoking and eating too much of the wrong foods.

这些疾病的主要原因是吸烟和过食不适当的食物。

Texting while driving was listed as a major cause of road deaths among young Americans back in 2013.

在2013年，开车时发短信是美国年轻人在交通死亡事故中的主要原因。

Stress is one of the major causes of illness and can also lead to depression and anxiety.

压力是疾病的主要原因之一，也会导致抑郁和焦虑。

An irregular heartbeat, known medically as ventricular tachycardia, is a major cause of sudden heart attacks worldwide.

心律不齐，医学上称为室性心动过速，是全球突发心脏病的主要原因。

They look at how exercise may lower the risk of two major causes of death–cancer and stroke.

他们研究了运动如何降低癌症和中风这两大致死疾病的风险。

Traffic jams are not only a daily annoyance– they're a major cause of fatalities, wasted resources, and planet-threatening pollution.

堵车不仅仅是日常的烦恼，还是意外死亡、资源浪费和地球污染的主要原因。

One major cause of this problem is the confusion over food expiration labels, which are currently not regulated by the government.

一大原因是食物过期标签混乱，目前并未由政府监管。

It shows the country saw about 600,000 more deaths than usual, with COVID-19 being the major cause of the increase.

报告显示，美国死亡人数比常年增加了约60万人，其中新冠是死亡人数增加的主要原因。

Japanese researchers found eating the yoghurt reduced levels of hydrogen sulphide, a major cause of bad breath, in 80% of volunteers.

日本研究者们发现多喝酸奶可以减少80%的受试者体内的硫化氢含量，而硫化氢是口腔异味的主要诱因。

Another major cause of global inequalities is population growth.

全球不平等的另一个主要原因是人口增长。

Some economists also see increasing money supply as another major cause of inflation.

一些经济学家还将货币供应量增加视为通货膨胀的另一个主要原因。

29. What is a major cause of the water shortage according to Mclntyre?

29. 根据 Mclntyre 的说法，缺水的主要原因是什么？