manifold

• 形容某事物具有多种不同的形式、类型或组成部分；数量众多且多样。

Describes something that has many different forms, types, or elements; numerous and varied.

1. Many and variedC1formal

   Having many different forms, features, or elements; diverse and numerous.

   多种多样的

   • The benefits of the new policy are manifold.
   • She faced manifold challenges during her career.
   • The project has manifold applications in modern technology.

   同义词diverseheterogeneousmultifariousmultiplemultitudinousmyriadnumeroussundryvariegatedvarious

   反义词fewhomogeneouslimitedonesamesimplesingularuniform

• 指多分支管道或集流管，将一路流体分配到多个支路；也指用于复写多份副本的薄纸；数学上指局部类似欧几里得空间的拓扑空间，即流形。

A noun with multiple meanings: a pipe with several lateral outlets for connecting other pipes; a lightweight paper used with carbon paper to create multiple copies; or a mathematical set of points forming a closed surface or its analogue in three or more dimensions.

1. Pipe with multiple outletsB2formaltechnical

   A pipe or chamber with several openings for connecting to other pipes, used in engines and plumbing systems.

   歧管

   • The exhaust manifold channels gases from the engine cylinders.
   • A plumber replaced the old manifold in the heating system.
   • The intake manifold distributes air to each cylinder.

   同义词collector

2. Carbon copy paperC1formal

   A thin, lightweight paper used with carbon paper to create multiple copies of a document at once.

   复写纸

   • Before photocopiers, typists used manifold paper for duplicates.
   • The office ordered a ream of manifold paper for forms.
   • He inserted carbon paper between sheets of manifold paper.

   同义词flimsyonionskin

3. Mathematical spaceC2formalscientific

   A topological space that locally resembles Euclidean space, used in advanced geometry and physics.

   流形

   • A sphere is a classic example of a two-dimensional manifold.
   • Einstein's theory of general relativity uses a four-dimensional manifold.
   • The mathematician studied the properties of a Riemannian manifold.

• 过时动词，意为制造多个副本或使成倍增加；在现代英语中已属古旧用法。

An archaic verb meaning to make multiple copies of something, or to multiply; now considered obsolete in modern English.

1. Multiply or increaseC2formal

   To make multiple copies of something; to increase or multiply in number or quantity.

   增殖

   • The company manifolded its profits through strategic investments.
   • The effects of the policy manifolded over time.
   • The artist manifolded the original design for the exhibition.

   同义词amplifyaugmentcopyduplicateincreasemultiplyproliferatereproduce

   反义词decreasediminishlessenreduce

2. Combine or expandC2formal

   To combine or increase by multiplication; to cause something to become more numerous or complex.

   使多样化；使增多

   • The data manifolded into several distinct categories.
   • The project manifolded its scope to include additional features.
   • The research manifolded the initial findings into a comprehensive study.

   同义词amplifyaugmentexpandincreasemagnifymultiplyproliferate