coastline的音標是[?k??stla?n]，翻譯成中文是海岸線。

速記技巧：coastline可以嘗試按照音標劃分音節，即/k??/st/la?n/。

英文詞源：

coastline這個詞源自拉丁語“coastus”，意為海岸線。

變化形式：

coastline可以轉化為名詞形式，即coast，意為海岸。此外，它還可以轉化為形容詞形式，即coastal，意為海岸的。

相關單詞：

1. coastguard：海岸警衛隊

2. coastalregion：海岸地區

3. coastalzone：海岸帶

4. coastalerosion：海岸侵蝕

5. coastalreservoir：海岸水庫

6. coastaltraffic：沿海運輸

7. coastalfisheries：沿海漁業

8. coastalbarrier：海岸屏障

9. coastalsandbar：海岸沙洲

10. coastalwaves：海岸波濤

以上這些單詞都與coastline有著密切的聯系，它們都涉及到海岸線及其相關領域。這些單詞在描述海洋環境、海洋工程、海洋經濟等方面都有著廣泛的應用。

常用短語：

1. coastline country

2. along the coastline

3. coastline map

4. coastline erosion

5. coastal erosion

6. coastal protection

7. coastline survey

雙語例句：

1. The country has a long coastline, stretching for thousands of kilometers.

2. We need to conduct a coastline survey to assess the erosion risk.

3. The coastline is constantly eroding due to natural processes.

4. The government is working on coastal protection measures to safeguard the coastline.

5. The coastline is a crucial habitat for marine life.

6. The coastline is a beautiful and unique natural resource that must be protected.

英文小作文：

Coastlines are a unique and beautiful natural resource that must be protected. They are crucial habitats for marine life and provide valuable resources such as fish and shellfish. However, coastlines are constantly eroding due to natural processes, and it is important to take measures to safeguard them. Governments should invest in coastal protection measures, such as building seawalls and implementing sustainable coastal management strategies, to protect the coastline and its surrounding environment. At the same time, we should also be mindful of the impact of human activities on the coastline and work to reduce our carbon footprint to minimize further erosion. In conclusion, coastlines are an essential part of our planet"s biodiversity and must be protected for future generations to enjoy their beauty and benefits.