1
a fiber of something
用于指单根纤维，可数名词。
A fiber of cotton was found on the cloth.
布料上发现了一根棉纤维。
纤维
先理解核心含义，再看它在真实句子里的用法。
纤维
a slender, threadlike structure or material
A fiber of cotton was found on the cloth.
布料上发现了一根棉纤维。
如植物纤维、肌肉纤维
细长且可纺成纱线的物质
a slender and greatly elongated substance capable of being spun into yarn
植物性食物中难消化、低营养的粗纤维,能刺激肠蠕动
coarse, indigestible plant food low in nutrients; its bulk stimulates intestinal peristalsis
细长的丝状细胞(尤指肌纤维或神经纤维)
any of several elongated, threadlike cells (especially a muscle fiber or a nerve fiber)
Eating more fiber helps improve digestion and prevent constipation.
多吃膳食纤维有助于改善消化和预防便秘。
Cotton is a natural fiber that is widely used in the textile industry.
棉花是一种天然纤维，广泛应用于纺织工业。
Regular exercise can help increase the strength of your muscle fibers.
定期锻炼有助于增强肌肉纤维的力量。
用于指单根纤维，可数名词。
A fiber of cotton was found on the cloth.
布料上发现了一根棉纤维。
用于描述食物含有较多膳食纤维，不可数。
Whole grains are high in fiber.
全谷物富含膳食纤维。
fiber用作定语名词，常构成复合词。
Fiber optics revolutionized communication.
光纤彻底改变了通信方式。
复数形式指多根纤维或不同类型纤维。
The muscle fibers of the heart contract rhythmically.
心脏的肌纤维有节奏地收缩。
Not this
I need more fibers in my diet.
Use this
I need more fiber in my diet.
表示膳食纤维时，fiber 为不可数名词，不能加 -s。正确的用法是用单数形式。
Not this
This is a fiber tissue.
Use this
This is a fibrous tissue.
fiber 是名词，不能直接作定语修饰名词表示‘由纤维构成的’，应使用形容词 fibrous。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
膳食纤维
Apples are a good source of dietary fiber.
苹果是膳食纤维的良好来源。
肌纤维
Regular exercise increases muscle fiber size.
经常锻炼会增大肌纤维。
神经纤维
The nerve fiber carries signals to the brain.
神经纤维将信号传递到大脑。
天然纤维
Cotton is a natural fiber used in clothing.
棉花是一种用于服装的天然纤维。
光纤
Optical fiber transmits data at high speed.
光纤高速传输数据。
碳纤维
Carbon fiber is strong and lightweight.
碳纤维坚固且轻。
道德品质；骨气
He lacked the moral fiber to admit his mistake.
他缺乏承认错误的道德勇气。
整个身心；每根纤维
She wanted to win with every fiber of her being.
她整个身心都渴望胜利。
Use fiber naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象字母'i'就是那根细丝纤维，吃蔬菜水果补充fiber，促进肠道蠕动。
语域：neutral 常见场景：营养与健康、纺织和材料、生物学或医学 作为普通名词时语气中性，日常会话和书面语都常用。多用于营养学（膳食纤维）、纺织材料以及生物医学（肌纤维、神经纤维）等具体场景；具体含义需根据搭配和语境判断。英式英语常写作 fibre。
可数指单根纤维，不可数指材料或膳食纤维
Dictionary facts from ECDICT, WIKTIONARY.