1
noun: a manifold with [number] outlets
作名词时指连接多个管道的歧管，常见于汽车发动机。
The engine has a manifold with four outlets.
这台发动机有一个带四个出口的歧管。
歧管
先理解核心含义，再看它在真实句子里的用法。
歧管
a pipe that has several lateral outlets to or from other pipes
The engine has a manifold with four outlets.
这台发动机有一个带四个出口的歧管。
A pipe fitting or similar device that connects multiple inputs and outputs.
具有多个侧向出口或入口的管道
a pipe that has several lateral outlets to or from other pipes
A Hausdorff topological space that looks locally like the "ordinary" Euclidean space Rn.
用于复写纸制作多份副本的轻质纸
a lightweight paper used with carbon paper to make multiple copies
The engine's manifold has a small crack, so the car sounds rough at idle.
发动机的歧管有一条小裂缝，所以这辆车怠速时声音很粗糙。
AI contextual example
He bought a new manifold and fitted it to his motorcycle.
他买了一个新歧管，并把它装到了他的摩托车上。
AI contextual example
The plumber replaced the water manifold because the old one was leaking.
水管工更换了水歧管，因为旧的在漏水。
AI contextual example
an original and two manifolds
一份原件和两份副本。
WordNet
作名词时指连接多个管道的歧管，常见于汽车发动机。
The engine has a manifold with four outlets.
这台发动机有一个带四个出口的歧管。
作形容词时通常置于名词前，正式用语，意为“多种的、多方面的”。
The tool has manifold uses.
这种工具有多种用途。
作动词较少见，指复写、使增多或使多样化。
She manifolded the document.
她复写了那份文件。
Not this
There are manifold reason to learn English.
Use this
There are manifold reasons to learn English.
manifold 作形容词表示“多种的、多方面的”，其后应接复数可数名词。汉语名词没有复数变化，学习者容易漏掉 -s，因此应写成 reasons。
Not this
There is a manifold of opportunities for young people.
Use this
There are manifold opportunities for young people.
manifold 是形容词，直接修饰复数名词；而名词 manifold 指“歧管/管道”，不表示“大量、多种”。汉语“多种”是名词性短语，导致误用 a manifold of，应去掉 a ... of，把 manifold 当作形容词使用。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
进气歧管
A clogged intake manifold can make the engine run poorly.
堵塞的进气歧管会导致发动机运转不良。
排气歧管
The exhaust manifold is bolted to the cylinder head.
排气歧管用螺栓固定在气缸盖上。
歧管压力
The pilot watched the manifold pressure gauge during the climb.
爬升过程中，飞行员注视着歧管压力表。
燃油歧管
A cracked fuel manifold caused fuel to leak onto the engine.
燃油歧管破裂，导致燃油泄漏到发动机上。
真空歧管
The vacuum manifold distributes vacuum to several ports.
真空歧管将真空分配到多个端口。
歧管垫片
Replace the manifold gasket if you notice an exhaust leak.
如果发现排气泄漏，应更换歧管垫片。
耶和华啊，你所造的何其多！都是你用智慧造成的；遍地满了你的丰富。
This quotation from Psalm 104:24 in the King James Version of the Bible praises God for the vast variety of creation, using 'manifold' to mean 'many and various'.
这节出自《圣经·诗篇》104篇24节（英王钦定本）的经文赞美上帝创造的多样与丰盛，其中 manifold 意为“繁多的、多样的”。
Use manifold naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆：汽车“歧管”（manifold）一根主管分出多个支管——由此记住它“多种、多方面”的意思。
语域：neutral 常见场景：mechanical engineering、automotive repair、technical manuals 作名词时，manifold 是专业技术词，多用于机械工程、汽车维修或技术手册等场景，指连接多个管道的歧管；语气通常中性偏正式。
manifold 最后的 -fold 读 /foʊld/，与 fold、bold、cold、gold、old、told 等 -old 词押韵（这些词中的 old 都读 /oʊld/）。注意 manifest /ˈmænɪfɛst/ 拼写相似，但读音和重音都不同。
Dictionary facts from ECDICT, WIKTIONARY.