methane

简明释义

英[ˈmiːθeɪn]美[ˈmeθeɪn]

n. 甲烷，沼气

英英释义

单词用法

同义词

反义词

例句

1.Release of methane into the atmosphere will be gradual, but steady.

甲烷释放到大气中会是逐渐的，但是稳定的。

2.The ignition of methane gas killed eight men.

甲烷起火造成8人死亡。

3.The burning of methane generates carbon dioxide that is released into the atmosphere.

燃烧甲烷产生二氧化碳，然后释放到大气中。

4.Therefore, the methane now emitted from open landfills should instead be burned to produce electricity.

因此，现在从露天垃圾填埋场排放的甲烷应该被用来发电。

5.The large amount of methane contained in the atmosphere surrounding Neptune stained it blue.

围绕海王星的气层内所含大量甲烷将它染成了蓝色。

6.The Jovian planets have very thick atmospheres consisting of varying amounts of hydrogen, helium, methane, and ammonia.

木星的行星有非常厚的大气层，且由不同数量的氢、氦、甲烷和氨等元素组成。

7.The methane concentration nearly doubled, for example, between the peak of the penultimate glacial period and the following interglacial period.

例如，在倒数第二个冰期的高峰和接下来的间冰期之间，甲烷浓度几乎增加了一倍。

8.The gas produced by the decomposition of organic matter is primarily composed of methane.

有机物分解产生的气体主要由甲烷组成。

9.Farmers are exploring ways to capture methane emissions from livestock to reduce greenhouse gases.

农民正在探索捕获牲畜排放的甲烷以减少温室气体的方法。

10.Landfills produce large amounts of methane as waste decomposes.

垃圾填埋场在废物分解时会产生大量的甲烷。

11.Natural gas is mostly made up of methane, which is a cleaner alternative to coal.

天然气主要由甲烷组成，是一种比煤更清洁的替代品。

12.Scientists are studying how to convert methane into more useful fuels.

科学家正在研究如何将甲烷转化为更有用的燃料。

作文

Methane, represented by the chemical formula CH4, is a colorless, odorless gas that is a significant component of natural gas. It is the simplest alkane and is primarily produced during the decomposition of organic matter under anaerobic conditions. Understanding the properties and implications of methane (甲烷) is crucial for various fields, including environmental science, energy production, and agriculture.One of the most important aspects of methane (甲烷) is its role as a greenhouse gas. Although it is less abundant than carbon dioxide, methane (甲烷) is much more effective at trapping heat in the atmosphere, with a global warming potential that is over 25 times greater than that of carbon dioxide over a 100-year period. This means that even small increases in methane (甲烷) emissions can have significant impacts on climate change. Major sources of methane (甲烷) emissions include livestock digestion, landfills, and the production and transport of fossil fuels.In agriculture, methane (甲烷) is often released from enteric fermentation in ruminant animals like cows and sheep. These animals produce methane (甲烷) during digestion, which is then expelled through belching. Furthermore, manure management practices can also contribute to methane (甲烷) emissions. To mitigate these emissions, farmers are exploring various strategies, such as dietary adjustments for livestock and improved manure management techniques.In addition to its environmental impact, methane (甲烷) has significant economic implications. As a major component of natural gas, it serves as an important energy source for heating, electricity generation, and as a feedstock for chemical production. The extraction and use of methane (甲烷) from natural gas reserves have become a cornerstone of the global energy market. However, the challenge lies in balancing the benefits of methane (甲烷) as an energy source with its potential to contribute to climate change.Efforts to reduce methane (甲烷) emissions are gaining traction worldwide. Governments and organizations are implementing regulations and initiatives aimed at monitoring and reducing methane (甲烷) emissions. For example, the Global Methane Pledge, launched at COP26, aims to reduce global methane (甲烷) emissions by 30% by 2030 compared to 2020 levels. This initiative highlights the importance of international cooperation in addressing the challenges posed by methane (甲烷).In conclusion, methane (甲烷) is a vital substance with both beneficial uses and environmental concerns. Its role as a potent greenhouse gas necessitates urgent action to mitigate its emissions while recognizing its importance as a key energy source. By understanding and managing methane (甲烷) effectively, we can work towards a more sustainable future, balancing our energy needs with the health of our planet.

甲烷，化学式为CH4，是一种无色、无臭的气体，是天然气的主要成分。它是最简单的烷烃，主要在厌氧条件下有机物分解时产生。理解甲烷（methane）的性质和影响对于环境科学、能源生产和农业等多个领域至关重要。甲烷（methane）作为温室气体的作用是最重要的方面之一。尽管它的丰度低于二氧化碳，但甲烷（methane）在大气中捕获热量的效果要高得多，其全球变暖潜力在100年内超过二氧化碳25倍以上。这意味着，即使是少量增加的甲烷（methane）排放也可能对气候变化产生重大影响。甲烷（methane）排放的主要来源包括牲畜消化、垃圾填埋场和化石燃料的生产与运输。在农业中，甲烷（methane）通常通过反刍动物（如牛和羊）的肠道发酵释放。这些动物在消化过程中会产生甲烷（methane），然后通过打嗝排出。此外，粪便管理实践也可能导致甲烷（methane）排放。为了减少这些排放，农民正在探索各种策略，如调整牲畜饮食和改进粪便管理技术。除了环境影响外，甲烷（methane）还具有重要的经济意义。作为天然气的主要成分，它是供暖、发电和化学生产的重要能源来源。从天然气储备中提取和利用甲烷（methane）已成为全球能源市场的基石。然而，挑战在于平衡甲烷（methane）作为能源来源的好处与其对气候变化的潜在贡献。减少甲烷（methane）排放的努力在全球范围内获得了关注。各国政府和组织正在实施旨在监测和减少甲烷（methane）排放的法规和倡议。例如，在COP26上启动的全球甲烷承诺，旨在到2030年将全球甲烷（methane）排放量比2020年水平减少30%。这一倡议突显了国际合作在应对甲烷（methane）带来的挑战中的重要性。总之，甲烷（methane）是一种重要物质，既有益处也存在环境问题。作为一种强效温室气体的角色需要紧急行动以减轻其排放，同时认识到它作为关键能源来源的重要性。通过有效理解和管理甲烷（methane），我们可以朝着更可持续的未来迈进，在满足能源需求的同时保护我们星球的健康。