"estuary"的音標為[?estj??r?] ，基本翻譯為“入海口，河口”，速記技巧為“est（是）st（死）uary（口）→死口→入海口”。

Estuary的英文詞源可以追溯到拉丁語“estuaria”，意為河口或河流入海的區域。其變化形式包括名詞“estuary”和形容詞“estuarine”。

相關單詞：

Estuary：這個詞通常指河流流入海洋的區域，也用于描述海洋與河流之間的交界處。

Estuarine：這個形容詞常用于描述與海洋或河流有關的物質或環境，如鹽度變化、生物多樣性等。

Estuary fish：指生活在河口地區的魚類，這些魚通常具有適應在淡水和海水之間轉換的能力。

Saltmarsh：鹽沼，是海洋與陸地之間的交界處，由鹽沼澤和沿海潮汐相互作用形成。

Marshland：指由沼澤地、濕地等構成的地區，這些地方常常與海洋或河流有關。

Estuardian：指居住在河口地區或與河口地區相關的居民。

Estufer：指在河口地區工作或活動的人，如捕魚、航運、造船等。

Estuary mouth：河流入海的口子，是海洋與河流之間的交界處，常常是水流湍急、泥沙堆積的地方。

Estuarine ecology：河口生態學，研究河口地區的生物、環境、化學物質等生態學問題。

Estuarine sediment：河口沉積物，指河流入海時帶來的沉積物，是研究河口地區環境的重要材料。

Estuary在英語中是一個重要的詞匯，它不僅描述了河流與海洋的交界處，還反映了人類與自然環境的關系。這個詞的使用也反映了人類對自然環境的認識和適應。

常用短語：

1. estuary of the river Thames 泰晤士河口

2. navigate through the estuary 穿過河口航行

3. coastal estuary 沿海河口

4. tidal estuary 潮汐河口

5. freshwater estuary 淡水河口

6. narrow estuary 狹長河口

7. wide estuary 寬闊河口

例句：

1. We moored the boat in the estuary and took a walk on the beach.

2. The ships entered the estuary and began their journey up the river.

3. The fishermen work in the tidal estuary, catching fish at low tide.

4. The narrowest part of the estuary is where the river meets the sea.

5. The wide estuary is a popular destination for tourists looking for a relaxing day out.

6. The freshwater and saltwater mix in this estuary, creating a unique ecosystem.

英文小作文：

Title: The Mysteries of the Estuary

The estuary is a unique and fascinating place, where freshwater and saltwater meet, creating a complex ecosystem that is full of mystery and wonder. From the tiny creatures that live in the mud to the large ships that navigate through its waters, the estuary is a place that holds many secrets waiting to be discovered.

I remember my first visit to an estuary, it was a coastal estuary with waves crashing against the shore and seagulls flying overhead. I was fascinated by the way the water seemed to flow back and forth with the tide, and how the sandy beach was constantly changing with the tides and storms. It was here that I learned about the importance of nature and how it shapes our world.

The estuary is a place where people come to relax, fish, or just enjoy the beauty of nature. It is also a place where scientists come to study the complex ecosystem and try to understand how it works. The estuary is a living laboratory where we can learn about life, water cycles, and how our actions affect our environment.

In conclusion, the estuary is a magical place that holds many secrets waiting to be discovered. It is a place that teaches us about our environment, our planet, and our role in it. I hope you will all have the opportunity to visit an estuary and experience its wonders for yourself.