cationic的音標為["ke?t????k] ，基本翻譯為“陽離子”的意思。速記技巧可以考慮將詞根和詞綴進行聯想記憶，例如在看到cation時，可以聯想到它和cationic中的ic類似，而ic通常表示“…的”，因此cation可以理解為帶有電荷的粒子，進一步聯想到陽離子。

Cationic這個詞來源于拉丁語，意思是“帶有陽電荷的”。它的變化形式包括形容詞cationic（帶陽電荷的）和名詞cation（陽離子）。

相關單詞：

1. cation（陽離子）: 在化學中，它表示帶正電荷的離子，是帶正電荷的原子或原子團。

2. cations（陽離子）: 這是cation的復數形式，通常用于描述大量的陽離子。

3. cationic surfactant（陽離子表面活性劑）: 是一種用于洗滌劑、乳化劑和殺菌劑等領域的化學物質。

4. cationization（陽離子化）: 這是一個過程，通常用于將物質轉化為帶正電荷的形式。

5. cationic polymer（陽離子聚合物）: 是一種高分子化合物，通常用于水處理、農業和醫療等領域。

6. cationic detergent（陽離子洗滌劑）: 是一種用于清潔衣物的化學物質，通常含有陽離子表面活性劑。

7. cationic charge（正電荷）: 在生物化學中，它描述了蛋白質或其他生物分子中的正電荷部分。

8. cation-pi（陽離子-π相互作用）: 是一種分子間相互作用，其中帶正電荷的離子與帶負電荷的分子相互作用。

9. cation-exchange（陽離子交換）: 是一種在生物化學和材料科學中常見的過程，其中帶正電荷的離子在分子之間進行交換。

10. cation-rich（陽離子豐富的）: 這是一個描述詞，用來形容含有大量陽離子的物質或環境。

常用短語：

1. cationic surfactant

2. cationic polymer

3. cationic detergent

4. cationic adsorption

5. cationic charge

6. cationic protein

7. cationic iron

例句：

1. The surfactant is used to improve the stability of the emulsion.

2. The polymer can be used as a cationic flocculant.

3. The detergent can effectively remove oil and grease stains.

4. The adsorption of cationic polymers is very strong.

5. The charge of the particle is cationic, which can attract oppositely charged particles.

6. The protein contains a cationic group, which can bind to anionic substances in the body.

7. Cationic iron is used in water treatment to remove dissolved oxygen.

英文小作文：

Cationic surfactants are commonly used in detergents and emulsifiers, and they play an important role in improving the stability and efficiency of various chemical processes. In addition, cationic polymers are widely used in water treatment and wastewater treatment, where they can effectively remove suspended solids and organic pollutants through adsorption and flocculation. These polymers also have excellent water-solubility and biodegradability, making them environmentally friendly and sustainable materials for use in various industrial processes. In addition, cationic proteins are used in various medical and pharmaceutical applications, where they can bind to anionic substances in the body to improve drug delivery and treatment efficiency. Cationic iron is also used in water treatment to remove dissolved oxygen, which is essential for maintaining water quality and ensuring the safety of drinking water sources.