정의
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명사
A number of people or things together.
예문
- There is a group of houses behind the hill.
- A group of students waited outside.
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명사
In math, a set with an operation that follows certain rules.
예문
- We assume the existence of a group with no solution.
- The book explains the group SU2.
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명사
In math, a set linked to a point on a curve.
예문
- The group of a divisor decides the curve's system.
- Mathematicians compute this group for each curve.
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명사
A small band of musicians.
예문
- Did you see the new jazz group?
- She sings lead in a local rock group.
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명사
A small set of galaxies close together.
예문
- Our galaxy belongs to a small group called the Local Group.
- Astronomers found a nearby group of twelve galaxies.
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명사
A column of elements in the periodic table.
예문
- Group 1 elements are the alkali metals.
- Carbon belongs to group 14.
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명사
A set of atoms in a molecule that gives it traits.
예문
- Nitro is an electron-pulling group.
- The hydroxyl group helps the molecule mix with water.
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명사
A part of a society or culture.
예문
- Every group in the society had its own customs.
- Sociologists study how each group meets the wider culture.
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명사
A unit in an air force.
예문
- The group flew three squadrons of bombers.
- He commanded a bomber group in the war.
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명사
A set of rock layers.
예문
- Geologists mapped the group of rock layers across the valley.
- The rock group covers millions of years.
