one

• 数字1，表示一个单位；在某些语境中也可用作代词或不定冠词，指某一个或某一类中的任意一个。

The number 1, representing a single unit; also used as a pronoun or indefinite article in some contexts.

1. Number 1A1formal

   Denoting a single unit or individual, not two or more.

   一

   • She gave me one cookie, not two.
   • He has only one brother.
   • The meeting lasted for one hour.

   同义词loneonlysinglesolesolitaryunique

   反义词manymultiplenumerousseveral

2. Same or identicalB1formal

   Being the same in kind, quality, or identity.

   同一个

   • They are of one mind on this issue.
   • We are all part of one community.
   • He spoke with one voice of authority.

   同义词identicalsameselfsame

   反义词differentdissimilardistinctdiverseotherseparatevarious

3. Unified or wholeB2formal

   Forming a unified or coherent whole.

   统一或整体

   • The two countries became one nation.
   • She felt at one with nature.
   • All the pieces fit together as one.

   同义词combinedentireintegratedsingleunifiedunitedwhole

   反义词dividedfragmentedseparatesplit

• 表示最小的正整数，即数字1；也指单一、统一、整体的概念，常作名词使用。

A number or figure representing the smallest natural number, often used as a noun to refer to the quantity or concept of unity.

不可数

1. Numeral 1A1formal

   The number representing a single unit.

   数字1

   • The number one is the smallest positive integer.
   • He scored one goal in the match.
   • There is only one cookie left in the jar.

   同义词monadsingleunitunity

2. A2informal

   Refers to a particular person or thing, often in context.

   那一个

   • She is the one who helped me with the project.
   • This is the one I was looking for.
   • The one who laughs last laughs best.

   同义词entityindividualthingunit

3. Unit of somethingB1formal

   A single unit or instance of something.

   一个

   • One of the chairs is broken.
   • Each one of us has a responsibility.
   • He bought one apple at the market.

   同义词individualinstanceitemsingleunit

• 基本数词，表示数量一、单个的人或事物；最小的正整数。

The cardinal numeral representing the quantity of a single unit; the first positive integer; the multiplicative identity in arithmetic where any number multiplied by one remains unchanged.

1. Cardinal numeral: the number 1A1formal

   Used to denote a single person or thing; the first positive integer; the quantity representing a single unit in counting, mathematics, and everyday usage. Serves as the multiplicative identity in arithmetic.

   基数词：数字1

   • I have one apple.
   • She is one year old.
   • One plus one equals two.
   • There is only one way to solve this.
   • He scored one goal in the match.