alluvia

alluvia的音标为[əˈluːviə]，基本翻译为“冲积层；冲积物”，速记技巧为“all（全部）＋uv（微粒）＋ia（东西）＝全部微粒的东西＝冲积物”。

Alluvium这个词源于拉丁语，意思是“冲积物”，它是由“alluv”这个词演变而来的，而“alluv”则来源于“alius”和“velvere”两个词，意思是“另一堆堆起来的”。

变化形式：复数形式是alluvia，形容词形式是alluvial。

相关单词：

1. Alluvial soil（冲积土）：由冲积物形成的土壤，通常肥沃且易于耕作。

2. Alluviation（冲积）：指水流或风将物质堆积并沉积的过程。

3. Alluvial fan（冲积扇）：水流搬运沉积物并形成的扇形地貌。

4. Alluvial deposit（冲积矿床）：由水流搬运并沉积的矿床。

5. Alluvial plain（冲积平原）：由河流沉积物形成的平坦地形。

6. Alluvial fan formation（冲积扇形成）：一种地貌形态，由水流搬运沉积物形成。

7. Alluvial sediment（冲积沉积物）：由水流或风搬运并沉积的物质。

8. Alluvial fan erosion（冲积扇侵蚀）：水流侵蚀冲积扇的过程。

9. Alluvial fan stability（冲积扇稳定性）：冲积扇的稳定性问题，如洪水、地震等引起的侵蚀和移动。

10. Alluvial fan erosion and sediment control（冲积扇侵蚀和沉积控制）：防止水流侵蚀和搬运沉积物的方法和技术。

常用短语：

1. alluvial fan 冲积扇

2. alluvium 冲积物

3. sedimentary alluvium 沉积物冲积

4. alluvial plain 冲积平原

5. alluvial deposit 冲积沉积

6. alluvial fan formation 冲积扇形

7. alluvial fan erosion 冲积扇侵蚀

双语例句：

1. The river deposited a layer of alluvium on the floodplain. (河流在河漫滩上沉积了一层冲积物。)

2. The alluvial fan is formed by the action of water and wind on the soil. (冲积扇是由水和风对土壤的作用形成的。)

3. The sedimentary alluvium of the river has formed fertile soil that supports a thriving agricultural community. (河流的沉积物形成了肥沃的土壤，支持着一个繁荣的农业社区。)

4. The alluvial plain is a rich source of water and fertile soil for agriculture. (冲积平原是农业用水和肥沃土壤的丰富来源。)

5. The erosion of the alluvial fan is a serious problem that needs to be addressed immediately. (冲积扇侵蚀是一个严重的问题，需要立即解决。)

6. The alluvial deposits in the area have been used for centuries to build dams and irrigation systems. (该地区的冲积沉积物已被用于几个世纪来建造水坝和灌溉系统。)

7. The alluvial plain is a unique environment that supports a diverse range of plant and animal species. (冲积平原是一个独特的生态系统，支持着各种各样的植物和动物物种。)

英文小作文：

The Alluvial Fan: A Unique Landform in the Floodplain

The Alluvial Fan, a unique landform in the floodplain, plays an essential role in the environment of the river basin. Formed by the deposition of sedimentary material from the river, it provides fertile soil for agriculture and supports a diverse range of plant and animal species.

During floods, sedimentary material is carried downstream and deposited on the floodplain, forming an alluvial fan that extends far into the surrounding countryside. The fan is characterized by its steep slopes and fan-shaped pattern, which are formed by the movement of water and wind on the soil.

However, the erosion of the Alluvial Fan can pose a serious threat to the environment and infrastructure of the river basin. Erosion can cause soil loss and damage roads and bridges, leading to economic losses and environmental degradation. Therefore, it is crucial to implement effective measures to protect and maintain the Alluvial Fan, ensuring its sustainable use for generations to come.