coalless

coalless的音标是["kəʊəlɪs]，基本翻译是“无煤的”。

速记技巧：直接根据单词的字母进行拼写，无需特殊的速记技巧。

coalless:

词源：coal（煤）去掉后缀-o-和-l，加上前缀co-构成。

变化形式：无变化。

相关单词：

1. coals（煤）：来源于coal，表示“煤”。

2. coalmine（煤矿）：由coal和mine组合而成，表示“煤矿”。

3. coalfield（煤田）：由coal和field组合而成，表示“煤田”。

4. coalbed（煤层）：由coal和bed组合而成，表示“煤层”。

5. coalburning（煤燃烧）：由coal和burning组合而成，表示“煤的燃烧”。

6. coalpower（煤发电）：由coal和power组合而成，表示“煤发电”。

7. coalminer（矿工）：指从事煤矿开采工作的工人。

8. coalbed methane（煤层气）：指储存在煤层中的天然气。

9. coalbed gas（煤层气）：指储存在煤层中的气体，通常用于发电等用途。

10. coal-fired（燃煤的）：表示使用煤炭作为燃料的。

以上这些单词都与煤炭有关，反映了煤炭在工业和能源领域的重要地位。同时，这些单词也体现了英语词汇的多样性和灵活性。

常用短语：

1. coal-fired power station 燃煤发电站

2. coal mining 采煤

3. coal-bed methane 煤层甲烷

4. coal ash 煤灰

5. coal-to-liquid 煤制液体燃料

6. coal-to-power 煤电化联合生产

7. coal-fired boiler 燃煤锅炉

双语例句：

1. The country"s largest coal-fired power station is being built in the northwestern region.

2. The mine has been operating for years and has become a symbol of China"s economic growth.

3. The government is trying to promote the development of clean energy to reduce emissions of greenhouse gases.

4. Coal mining has caused environmental problems such as soil erosion and water pollution.

5. The coal-to-liquid process has the potential to reduce the country"s reliance on imported oil.

6. Coal-fired boilers are widely used in factories and households to generate electricity and heat.

英文小作文：

Coal is a crucial source of energy for many countries, but it also causes environmental problems such as air pollution and greenhouse gas emissions. At the same time, renewable energy sources such as solar and wind power are becoming more popular, but they still have limitations. Therefore, coal-fired power stations are still necessary for meeting the energy needs of many people, but they must be operated in a sustainable way to minimize environmental impacts. In order to achieve this goal, it is necessary to improve technology and adopt more efficient methods of coal mining and processing. At the same time, we must also promote the development of clean energy sources to reduce our dependence on coal and other fossil fuels. In the long run, this will help us to protect the environment and ensure sustainable development.