coal mine的音標是[?k??l ma?n]，基本翻譯是“煤礦”。速記技巧是注意劃分音節，多讀幾遍，加強記憶。

coal mine的英文詞源：

coal mine這個詞源自于英語中的名詞mine，表示礦井的意思。它的詞源可以追溯到拉丁語的minestrum，意為“礦井”。

變化形式：

coal mine可以通過加后綴-n或-ness來構成名詞或形容詞。例如，coal mine disaster表示礦難，coal mining industry表示采礦業。

相關單詞：

1. coal：煤炭，源自拉丁語中的carbone，意為碳。

2. mine：礦井，源自拉丁語中的minestrum，意為礦井。

3. ore：礦石，源自拉丁語中的ore，意為礦物。

4. quarry：采石場，源自英語中的名詞 quarrel，意為爭吵。

5. tin mine：錫礦井，tin是錫的英文名稱，mine表示礦井。

6. coal bed methane：煤層氣，bed是床的意思，methane是甲烷的英文名稱。

7. coal mining equipment：采煤設備，equipment是設備的英文名稱。

8. coal mining technology：采煤技術，technology是技術的英文名稱。

9. underground coal mining：地下采煤，underground是地下的英文名稱。

10. surface coal mining：露天采煤，surface是露天的英文名稱。

常用短語：

1. coal mining equipment

2. underground coal mining

3. coal mine safety

4. coal seam mining

5. coal mining industry

6. coal mining company

7. coal mining technology

例句：

1. Coal mining equipment is essential for effective coal mining operations.

2. Underground coal mining is a dangerous and challenging job.

3. Mining companies must ensure the safety of their workers at all times.

4. The coal mining industry has been a crucial source of energy for decades.

5. Coal mining technology has made it possible to extract more coal from the same area.

英文小作文：

Coal mining is an essential industry that has played a crucial role in the development of our country"s economy. However, it is also a dangerous and challenging job that requires constant attention to safety measures to ensure the safety of workers and the environment around them. Today, we are witnessing the development of new technologies that are making it possible to extract more coal from the same area, while ensuring that the environment is not damaged in the process. However, we must also ensure that the safety measures are always taken to protect the workers and the environment from any potential risks. In conclusion, coal mining is an essential industry that requires constant attention to ensure the safety of workers and the environment around them, while also developing new technologies to extract more coal from the same area while protecting the environment.