free radical

free radical的音标为["friː ˈræktɪən]，基本翻译为“自由基”，速记技巧为：自由基（free radical）总是很“自由”（frree）。

Free radical这个词的英文词源可以追溯到拉丁语和希腊语，表示“自由”和“原子的”。它指的是分子中的未配对电子，这些电子可以在化学反应中起到关键作用。

变化形式：在词形上，free radical没有明显的变化形式。

相关单词：

1. Radical（根词） - 这是一个相关的单词，来自拉丁语，表示基础或根本。Free radical theory of aging（自由基的衰老理论）是一个重要的生物学概念。

2. Radical surgery（激进手术） - 这是一个医学术语，指的是一种可能对某些疾病进行大范围或深度的手术，以彻底解决问题。

3. Radical change（激进变革） - 这是一个常用的词语，表示重大的、彻底的改变。

以上这些单词都与自由基的概念和相关应用有关，它们在科学、医学和哲学等领域都有重要的应用。自由基在生物学中扮演着重要的角色，它们可以引发氧化应激，从而导致细胞损伤和衰老。同时，激进的概念也经常被用于政治、社会和文化领域，表示彻底的、颠覆性的改变。

总之，Free radical这个词的英文词源可以追溯到拉丁语和希腊语，它指的是分子中的未配对电子。这个词的相关单词在各个领域都有重要的应用，它们反映了科学、医学、哲学等领域的进步和发展。

常用短语：

1. free radical scavengers

2. free radical damage

3. free radical production

4. free radical attack

5. free radical stress

6. free radical elimination

7. free radical metabolism

例句：

1. The antioxidant properties of certain foods can help protect against free radical damage.

2. Exercise can help boost the body"s ability to fight free radicals.

3. Free radicals can cause oxidative stress and contribute to the development of various diseases.

4. Antioxidant supplements may help reduce the risk of free radical-related diseases.

5. Free radical production is linked to aging and can be reduced by healthy lifestyle choices.

6. Eating a balanced diet rich in antioxidants can help protect against free radical attack.

7. Free radical metabolism plays a crucial role in maintaining cellular health and function.

英文小作文：

Free radicals are highly reactive molecules that can cause damage to cells and tissues. They are produced naturally in the body during normal cellular processes, but can also be generated through exposure to environmental factors such as pollution and radiation. Free radicals can cause oxidative stress, which can lead to various diseases, including heart disease, stroke, diabetes, and some forms of cancer.

However, there are many ways to combat free radical damage. Eating a balanced diet rich in antioxidants, exercising regularly, and avoiding exposure to toxins and radiation are all ways to reduce the production of free radicals. Antioxidant supplements can also be helpful in reducing the impact of free radicals on the body. Additionally, certain foods and nutrients have antioxidant properties that can help protect cells from free radical damage.

Maintaining a healthy lifestyle and incorporating these strategies into your daily routine can help reduce the risk of free radical-related diseases and maintain cellular health and function.