apposition

• 名词，指一种语法关系，即一个词或短语紧邻另一个词或短语以提供补充信息（同位关系）；也指生物学中细胞壁通过层状沉积而生长的方式；还可指将事物并排放置或相邻的动作。

A noun referring to a grammatical relationship where a word or phrase is placed next to another to provide additional information, or a biological process of cell wall growth through layered deposits, or the act of placing things side by side.

1. Grammatical relationC1formal

   A grammatical construction where two elements, usually noun phrases, are placed side by side, with one element serving to identify or describe the other.

   同位语

   • In the phrase 'my friend John', 'John' is in apposition to 'my friend'.
   • The sentence 'The poet, a famous writer, gave a speech' uses apposition.
   • Apposition often provides additional information about a noun.

2. Biological growthC2formal

   A process of growth in which new layers of material are deposited on the surface of a cell wall, increasing its thickness.

   附着生长

   • Apposition is a key mechanism in the thickening of plant cell walls.
   • The growth of the shell occurs by apposition of new calcium carbonate layers.
   • In biology, apposition contrasts with intussusception, where new material is inserted within existing layers.

   同义词accretion

3. Act of placing side by sideC1formal

   The act of positioning things close together or side by side.

   并列

   • The apposition of the two buildings created a narrow alley.
   • In art, the apposition of contrasting colors can create a striking effect.
   • The apposition of the two ideas in the essay highlighted their differences.

   同义词collocationjuxtapositionplacement