colluvium

colluvium的音标是[kəˈluːvɪəm]，翻译成中文是冲积物。

速记技巧：coll（collected，收集的） + v（物质） + ium（名词后缀）→ 收集的物质→冲积物。

Colluvium这个词来源于拉丁语，意为“落下的土石”。它的变化形式包括colluvial（表示落下的土石的），colluviation（表示土石的堆积），以及colluvialite（表示土壤的沉积物）。

相关单词：

colluvium（落下的土石）: 通常指由风化作用产生的土壤或岩石的沉积物，通常位于山坡或河岸等地方。

colluvial deposit（冲积沉积物）: 指由雨水、河流、冰川等自然力量带来的沉积物，通常位于河岸、三角洲等地方。

colluvial fan（冲积扇）: 指由水流带来的沉积物形成的扇形地貌，通常位于河流的下游。

colluvial terrace（冲积阶地）: 指由水流带来的沉积物形成的阶梯状地貌，通常位于河流的下游。

colluvial soil（冲积土）: 指由落下的土石堆积而成的土壤，通常具有较好的通气性和排水性。

以上这些单词都与colluvium这个词有着密切的联系，它们都表示由落下的土石形成的沉积物或地貌。这些单词在地理学、地质学等领域中有着广泛的应用。

常用短语：

1. colluvium deposit 冲积物沉积

2. colluvial fan 冲积扇

3. colluvial landform 冲积地貌

4. colluviation 冲积作用

5. colluvial soil 冲积土

6. colluvial texture 冲积结构

7. colluvial processes 冲积过程

双语句子：

1. The river deposits a lot of colluvium every year.

这条河流每年都会沉积很多冲积物。

2. The mountainside is covered with colluvium, indicating a recent flood event.

山脚下覆盖着冲积物，表明最近发生了一次洪水。

3. The soil in this area is mainly composed of colluvial materials.

该地区的土壤主要由冲积物组成。

4. The soil in the valley is rich in colluvial nutrients.

山谷里的土壤富含冲积物中的养分。

5. The colluvial landform is a common feature of many river deltas.

冲积地貌是许多河口三角洲的常见特征。

6. The colluvial fan is a typical sedimentary landform in the alluvial plain.

冲积扇是冲积平原上典型的沉积地貌。

7. The process of colluviation plays an important role in the formation of many landscapes.

冲积作用在许多地貌的形成过程中起着重要的作用。

英文小作文：

The beauty of the natural world is truly breathtaking, and one of the most fascinating aspects is the way in which nature shapes and forms its environment through various processes. One such process is the colluviation, which refers to the deposition of sedimentary materials from the atmosphere or water onto the ground surface. This process creates unique landscapes such as the colluvial fan and contributes to the formation of fertile soil, which in turn supports a diverse range of plant and animal life.

Moreover, colluviation plays a crucial role in the formation of river deltas, which are some of the most fertile and densely populated regions on Earth. The sedimentary materials deposited by rivers during their journey to the sea create a unique environment that supports a diverse range of flora and fauna, and contributes to the development of thriving communities and economies.

In conclusion, the colluviation process is an essential aspect of our natural world that shapes our landscapes, supports life, and contributes to the diversity and richness of our planet.