coal

coal的音标是[ˈkəʊl]。基本翻译是“煤；煤炭”。速记技巧是注意不要和“flower”混淆。

coal的英文词源：

coal的英文词源可以追溯到拉丁语词源“carbo”，意为“炭”。在英语中，这个词被转化为coal，表示煤炭或煤块。

变化形式：复数形式是coal或coalitions；比较级是coarser或more coal；最高级是coolest或most coal。

相关单词：

1. coal mine：矿业，矿井。这个词源于英语中的coal，表示开采煤炭的地方或工作。

2. coal-fired：燃煤的。这个词来源于coal，表示使用煤炭作为燃料的方法或设备。

3. coal-gas：煤气，也称为瓦斯。这个词来源于coal，表示从煤炭中提取的燃气。

4. coalition：联盟，联合。这个词来源于coal，表示由不同团体或国家组成的联盟或联合体。

5. coalface：煤矿坑道的前壁。这个词来源于coal mining，表示煤矿坑道前方的坚硬岩石或材料。

6. coalface worker：煤矿工人。这个词表示在煤矿中工作的工人，通常指从事挖掘煤炭工作的人。

7. coal seam：煤层，也称为煤系地层。这个词来源于coal，表示煤炭层或地层。

8. coal-black：煤黑色的。这个词来源于coal，表示颜色深黑的特征。

9. coal-dust：煤尘。这个词来源于coal，表示煤炭颗粒或粉尘。

10. coal-tar：煤焦油。这个词来源于coal，表示从煤炭中提取的有机物质，通常用于制造药品和化妆品等产品。

常用短语：

1. coal mining

2. coal-fired power plant

3. coal bed methane

4. lignite

5. coal tar

6. coal mining equipment

7. coal-to-liquids

8. coal ash

例句：

1. Coal mining is a dangerous and dirty industry that requires strict safety measures.

2. The new coal-fired power plant will help to meet the increasing demand for electricity.

3. Lignite is a type of coal that is often used for generating power in developing countries.

4. The coal tar produced in the mining process is used in various industries such as paint manufacturing.

5. Coal mining equipment has made significant progress in recent years, with new technologies such as autonomous mining vehicles.

6. The coal-to-liquids process is a promising method for converting coal into a more versatile fuel.

7. The coal ash left over from coal mining can be used for various purposes such as cement production and road construction.

英文小作文：

Coal is an essential resource that has played a crucial role in the development of the modern world. It is used in the production of electricity, heat, and fuel, and is also a major component of many industrial processes. However, coal mining and its associated industries also have negative impacts on the environment and human health, and it is essential that we find alternative sources of energy and reduce our reliance on coal. Nevertheless, coal remains an important resource for the foreseeable future, and its use will continue to play a role in the global energy mix.