colorfast的音標為：[?k?l??fɑ?st] ，基本翻譯為“不易褪色的”，速記技巧為：color（顏色）+ fast（快）→顏色不易褪色。

Colorfast這個詞的詞源可以追溯到拉丁語詞根“color”和“fastus”，意為“快速的”、“不易壞的”。這個詞在英語中的變化形式主要是詞形的變化，如過去式、過去分詞和現在分詞等。

相關單詞：

1. Colour - 顏色，詞源同color，表示顏色的意思。

2. Fast - 快速的，詞源同fast，表示快速的意思。

3. Fastness - 堅固的，詞源同fast，表示堅固的意思。

4. Resolute - 堅決的，詞源同fast，表示堅定不移的意思。

5. Efficiency - 效率，詞源同fast，表示快速有效。

6. Flux - 流動，詞源同flow，表示流動的意思。

7. Stability - 穩定性，詞源同fast，表示穩定的意思。

8. Consistent - 一致的，詞源同color，表示顏色一致的意思。

9. Perpetual - 永久的，詞源同perpetual，表示永久的意思。

10. Immovable - 不可移動的，詞源同immoveable，表示不可移動的意思。

以上這些單詞都與colorfast這個詞有密切的聯系，因為它們都涉及到速度、穩定性、一致性、持久性等方面的含義。這些單詞在英語中廣泛使用，并且具有豐富的含義和用法。

常用短語：

1. colorfastness 耐色牢度

2. fast color 耐久色

3. fast-drying 快干色

4. fade-resistant 不褪色

5. colorfastness indicator 耐色牢度指示劑

6. colorfastness test 耐色牢度測試

7. colorfastness rating 耐色牢度等級

例句：

1. The fabric is highly colorfast and will not fade easily.

這件衣服的色牢度高，不易褪色。

2. The paint is fast-drying and will not peel or crack easily.

這種油漆干燥速度快，不易剝落或開裂。

3. The dye fastness of this fabric is excellent and it will not rub off onto other clothes.

這種織物的染料耐久性非常好，不會把顏色蹭到其他衣物上。

4. The colorfastness indicator indicates that the fabric is highly resistant to fading.

耐色牢度指示劑表明這種織物具有很高的抗褪色性能。

5. The colorfastness rating of this shirt is excellent, making it suitable for daily wear.

這件襯衫的耐色牢度等級很高，適合日常穿著。

6. The colorfastness of the carpet is excellent and it will not fade or wear easily.

地毯的耐色牢度非常好，不易褪色或磨損。

7. The new paint formula is fast-drying and will save us time and money in painting repairs.

新涂料配方干燥速度快，將節省我們在涂料維修上的時間和金錢。

英文小作文：

My favorite colorfast fabric is a cotton blend that I find very comfortable to wear and very durable in terms of its color retention. I often find myself wearing this fabric because it stays bright and colorful for a long time without fading or wearing out easily. I also appreciate the fact that it is easy to maintain and requires less ironing or washing, which makes it a perfect choice for daily wear. Additionally, I am always impressed by the fact that colorfast fabrics are environmentally friendly because they do not require as much dyeing and washing, which saves water and energy resources. In conclusion, colorfast fabrics are a must-have for anyone who loves fashion and style, as they provide a sense of confidence and durability that cannot be matched by other fabrics.