grains

grains — noun

IPA/ɡreɪn/
KK[ɡrˈenz]IPA/ɡreɪn/
  • grainssingular
  • grainsesplural

1. The small hard seeds produced by plants such as wheat, rice, and corn, which peo

1.名詞A2
釋義

The small hard seeds produced by plants such as wheat, rice, and corn, which people grow and eat as a basic food.

例句

Marta buys whole grain bread from the bakery near her apartment every Sunday.

whole grain bread — common food collocation

Farmers store their grain in metal silos to keep it dry and safe from pests.

同義詞
  • cereal

    refers more broadly to the grass family that produces grain, or to breakfast products made from grain

  • seed

    a wider category that includes grains but also applies to non-food and non-cereal seeds

文法句型

grain + of + noun

用法筆記

Often used in the singular form (grain) as an uncountable mass noun to refer to the food category, e.g. 'Grain is a major export.'

常見錯誤

I bought some corns for dinner.
I bought some corn for dinner.
💡Corn is already an uncountable mass noun for the grain; you do not need a plural. Use 'grain' as a countable noun only when referring to individual seeds ('a few grains of rice').

2. A very small hard piece of a substance such as sand, salt, or sugar.

2.名詞A2
釋義

A very small hard piece of a substance such as sand, salt, or sugar.

例句

A single grain of sand can irritate your eye and make it water for hours.

a grain of sand — most common fixed phrase

Cyrus noticed a few grains of salt on the kitchen counter near the kettle.

同義詞
  • particle

    more formal and scientific; can be any size, not necessarily visible

  • speck

    even smaller than a grain; emphasizes how tiny something is

文法句型

a grain of + substance noun

用法筆記

Almost always followed by 'of + noun' naming the substance. The substance noun is typically uncountable, e.g. a grain of sand / salt / rice / sugar / dust.

常見錯誤

I found a sand grain in my shoe.
I found a grain of sand in my shoe.
💡The idiomatic word order is 'a grain of [substance]', not '[substance] grain'.

3. A very small quantity of a quality or feeling, especially truth, honesty, or sen

3.名詞B2
釋義

A very small quantity of a quality or feeling, especially truth, honesty, or sense, in a statement or situation.

例句

There is not a single grain of truth in the rumor about the school closing.

not a grain of truth — common fixed expression

Renata's explanation had a grain of honesty, but she was still hiding the main facts.

同義詞
  • trace

    emphasizes evidence or sign of something rather than quantity

  • bit

    more casual and broader; can apply to physical objects too

反義詞
  • lot

    a large amount, the opposite extreme

文法句型

a grain of + abstract noun

用法筆記

This sense is almost always found in the fixed pattern 'a grain of + abstract noun'. By far the most common pairing is 'a grain of truth'. Commonly used with negative structures ('not a grain of...').

常見錯誤

The story has a truth grain.
The story has a grain of truth.
💡The word order must follow 'a grain of + noun', not the reverse.

4. The visible pattern of tiny colored or black-and-white spots that make up a phot

4.名詞C1
釋義

The visible pattern of tiny colored or black-and-white spots that make up a photographic image, especially when the image looks rough rather than smooth.

例句

The heavy grain in the photo made the portrait look rough and old-fashioned.

heavy grain / visible grain — common photography descriptors

Old film cameras often produce visible grain when you take pictures in dim light.

同義詞
  • noise

    specifically used in digital photography for unwanted random pixels; grain traditionally refers to film

  • texture

    broader term for any surface quality, not limited to photography

文法句型

[high/low] grain

visible grain

用法筆記

Typically uncountable when describing the overall pattern ('this photo has too much grain'). Countable when referring to individual spots ('the grains in the negative are visible under a magnifying glass').

5. The visible lines, fibers, or layers found in materials such as wood, leather, s

5.名詞B1
釋義

The visible lines, fibers, or layers found in materials such as wood, leather, stone, or cloth.

例句

Sven sanded the wooden table until the grain felt smooth and shone in the sunlight.

wood grain — most common material collocation

Leather with a tight grain is usually more expensive and lasts much longer.

tight grain — quality descriptor for leather

同義詞
  • texture

    broader term for how a surface feels to touch, not limited to line-like patterns

  • pattern

    can describe any repeated design, not necessarily directional fibers

文法句型

follow the grain

against the grain

the grain of + material

用法筆記

When working with wood, 'against the grain' means cutting or sanding in the opposite direction of the fibers, which tends to damage the surface. This literal meaning is also the origin of the idiom 'go against the grain'.

常見錯誤

I sanded the wood against the grain and it became smooth.
I sanded the wood with the grain and it became smooth.
💡Sanding against the grain damages the surface, not smooths it.

6. An old unit for measuring weight, equal to about 0.065 grams, used for very smal

6.名詞C1
釋義

An old unit for measuring weight, equal to about 0.065 grams, used for very small amounts of medicine, precious stones, or bullets.

例句

A single grain of the medication was enough to calm the patient's cough within minutes.

grain as a unit of weight — historical/technical measure

Jewelers sometimes use grains to measure the weight of very small diamonds.

同義詞
  • milligram

    modern metric equivalent; 1 grain = about 64.8 milligrams

文法句型

[number] + grain(s)

grain of + [substance]

用法筆記

This is an old measurement unit, now mostly replaced by grams and milligrams. You will mainly encounter it in historical documents, antique recipes, and very specialized fields like ammunition handloading.

grains — verb

IPA/ɡɹˈeɪnz/
KK[ɡrˈenz]IPA/ɡrˈeɪnz/