allantoin

allantoin的音标为[əˈlæntuɪn]，基本翻译为“尿囊素”，速记技巧为“尿囊(an)素(t)”。

Allantoin的英文词源可以追溯到拉丁语词“allantois”，意为“输卵管”。Allantoin是一种重要的生物活性物质，广泛存在于植物中。它的变化形式包括allantoate（尿酸盐）。相关单词有allantois（输卵管）、allantoin（尿黄素）、allantoic（尿黄质的）、allantoicacid（尿囊素）、allantoisene（尿囊素酯）、allantoinase（尿黄素酶）、allantoin（尿酸）、allantoisinsuline（尿囊素胰岛素）等。这些单词在生物学、化学和医学领域都有广泛的应用。

Allantoin作为一种重要的生物活性物质，具有多种生物活性，如促进细胞分裂、抑制炎症等，因此在医药、化妆品等领域有广泛的应用。同时，它也是一种天然的抗氧化剂，可以有效地清除自由基，保护细胞膜和DNA免受氧化损伤。因此，allantoin在食品、保健品等领域也有一定的应用。

Allantoin的常用短语：

1. allantoinic acid 尿囊素酸

2. allantoinase 尿囊素酶

3. allantoinuria 尿囊素尿症

4. allantois 尿囊

5. allanto-urea cycle 尿囊循环

6. allanto-urea pathway 尿囊循环途径

7. allantoic acid 尿囊素

双语例句：

1. The enzyme allantoinase can be used to degrade the waste products of urea and creatinine.

尿囊素酶是一种可以降解尿素和肌酐废物的酶。

2. Allantoin is a natural moisturizing agent that can be found in plants and is used in cosmetics to improve skin texture and hydration.

尿囊素是一种天然的保湿剂，可以在植物中找到，并且被用于化妆品中以改善皮肤质地和保湿。

英文小作文：

Allantoin is a natural substance that is found in plants and is used in various ways in our daily lives. It is often used as a moisturizer in cosmetics to improve skin texture and hydration. In addition, it can also be used in the degradation of waste products such as urea and creatinine. The enzyme allantoinase plays an important role in this process, helping to break down these harmful substances and reducing their impact on the environment. As we become more aware of the importance of natural resources and the environment, it is becoming increasingly important to use natural substances such as allantoin in our daily lives. It is a reminder that we should always strive to use natural resources in a sustainable way to protect our planet for future generations.