Smog is a major problem in some cities of north China.
雾霾是中国北方一些城市的主要问题。
Cars cause pollution and smog in cities.
汽车在城市中造成污染和烟雾。
The sky was overspread with a heavy smog.
天空笼罩着浓重的烟雾。
The city was shrouded in a thick blanket of smog, making it difficult to see the buildings in the distance.
这座城市被厚厚的雾霾笼罩，远处的建筑都看不清。
Due to the high levels of smog, outdoor activities were canceled for the day.
由于雾霾严重，当天的户外活动都被取消了。
Smog has become a major environmental issue in many industrialized cities around the world.
雾霾已经成为全球许多工业化城市的一大环境问题。
The government introduced stricter emission standards to combat the increasing smog problem.
政府引入了更严格的排放标准来应对日益严重的雾霾问题。
Drivers were advised to use public transportation during the smog alert to reduce air pollution.
在雾霾警报期间，建议司机使用公共交通以减少空气污染。
The smog not only affects visibility but also poses serious health risks to citizens, especially those with respiratory issues.
雾霾不仅影响能见度，还对市民，尤其是有呼吸道疾病的人造成严重的健康风险。
Scientists have linked smog to an increased risk of heart disease and lung cancer.
科学家已经将雾霾与心脏病和肺癌的风险增加联系起来。
In the winter months, the combination of cold air and industrial emissions often results in severe smog episodes.
冬季，寒冷的空气与工业排放物的结合常常导致严重的雾霾期。
The city's air quality index soared due to a persistent smog condition, prompting the authorities to declare a state of emergency.
由于持续的雾霾状况，该市的空气质量指数飙升，促使当局宣布进入紧急状态。
The installation of air purifiers in homes has become common in areas frequently plagued by smog.
在经常遭受雾霾困扰的地区，家庭安装空气净化器已经很普遍。
The Luxurious house appeared in smog and fire and people in the house were trying to get out of it.
那幢豪华的房子笼罩在烟雾云海之中，房子里的人正在设法从里面掏出来。
Our products will help clear smog that is a leading cause of respiratory diseases," she told Xinhua.
The average density of PM2.5 -- fine particulate matter that causes smog -- fell 15.6 percent compared to a year earlier.
As China released stricter regulations to reduce smog and promoted carbon trade in several pilot cities as the country aims to achieve carbon peak by 2030 and carbon neutrality by 2060, there are still hurdles and limits for coal chemicals, including water supply, transportation, waste disposal and carbon emission issues, said Tang.
“尽管中国已出台更严格的法规以减少雾霾，并在多个试点城市推广碳交易，旨在实现2030年碳达峰和2060年碳中和的目标，但煤炭化工行业仍面临水资源供应、交通运输、废物处理以及碳排放等问题的挑战与制约，”唐（Tang）表示。
Liang said the market for air purifiers, however, still has large potential, as smog remains a concern in some regions, and consumers have growing needs for equipment dealing with pollutants other than PM 2.5 particles, like formaldehyde and pollen.
The capital introduced an annual quota on new car registrations in 2011 to ease traffic congestion and combat smog.
Environmental groups criticized the assertion about reducing crash deaths, and said the proposal would drive up gasoline prices, increase asthma-inducing smog, and reverse one of the most significant steps Washington has taken to curb climate-changing greenhouse gas emissions.
Prime Minister Narendra Modi's government wants all new cars on India's roads to be electric by 2030, to combat smog that routinely eclipses dangerous levels in the nation of 1.25 billion.
Carmakers in China have come under pressure to ramp up production of battery electric and hybrid vehicles ahead of tough new quotas to be imposed by Beijing, which wants to reduce urban smog and lower the country's reliance on oil.
But demand for LNG trucks is soaring as companies and manufacturers shift to vehicles that run on the gas Beijing sees as a key part of its war against smog.
The shift from diesel to LNG is among many government measures aimed at clearing the air, especially in the north, which was often shrouded in coal-fueled smog for much of the winter in the past.