conchiform

conchiform的音标是[kən"tʃɪfɪm]；基本翻译是“贝壳状的；贝壳形的”；速记技巧是：conch=贝壳+ -i-=形。

Conchiform这个词源自拉丁语，意为“海螺形的”。它的变化形式包括其过去式和过去分词，分别为conchiforme和conchiformed。

相关单词：

1. Conchology（海螺学）：这个学科研究海螺的形态、分类和历史。

2. Conch shell（海螺壳）：一种常见的海洋生物，常被用作装饰品或工艺品。

3. Conch-shell-shaped（海螺形的）：用来描述形状类似于海螺的物体或结构。

在描述生物形态或物体形状时，conchiform这个词非常有用，因为它能够清晰地传达出一种类似于海螺的形状。这个词的出现也反映了人类对海洋生物的浓厚兴趣和探索精神。

至于字数要求，由于这是一个比较长的单词，加上需要解释其变化形式和相关单词，所以至少需要100字才能充分解释清楚。

常用短语：

1. conch-shaped shell

2. conch-shell

3. conch-like

4. conch-shaped vessel

5. conch-shaped form

6. conch-shaped object

7. conch-shaped earthenware

例句：

1. The shell of a conch is a perfect example of a conchiform shape.

2. The conch-shell is a traditional instrument used in many cultures.

3. The oceanographer studied the conch-like shape of the coral reef to determine its stability.

4. The conch-shaped vessel was used to hold water for drinking and cooking.

5. The conch-shaped earthenware was used for storing food and other goods.

6. The conch-shaped earthenware was also used as a container for perfumes and other fragrant substances.

英文小作文：

Conch Shells - Symbol of the Past and Future

Conch shells have always been a symbol of the ocean and its beauty, representing both the past and future. These beautiful creatures, with their conchiform shape, have been used for various purposes throughout history, from traditional instruments to containers for perfumes and other fragrant substances.

In ancient times, conch shells were often used as currency, indicating their value and importance in society. Today, we can still see conch shells used in jewelry and other decorative items, which showcase their beauty and symbolism.

Moreover, conch shells have also been used in divination rituals, where they were believed to have the power to predict the future or reveal hidden truths. This is another example of how conch shells have been associated with both the past and future throughout history.

In conclusion, conch shells are a beautiful symbol of the ocean and its wonders, representing both the past and future in various ways throughout history.