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[N-MASS 物质名词]棉布 Cotton is a type of cloth made from soft fibres from a particular plant.
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[N-UNCOUNT 不可数名词]棉;棉花;棉株 Cotton is a plant which is grown in warm countries and which produces soft fibres used in making cotton cloth.
...a large cotton plantation in Tennessee.
田纳西州大片的棉田
3
[N-MASS 物质名词]棉线;棉纱 Cotton is thread that is used for sewing, especially thread that is made from cotton.
There's a needle and cotton there.
那儿有针和线。
in AM, use 美国英语用 thread
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[N-UNCOUNT 不可数名词]脱脂棉;药棉 Cotton or
absorbent cotton is a soft mass of cotton, used especially for applying liquids or creams to your skin.
in BRIT, use 英国英语用 cotton wool