extraction
gb/ɛkstɹˈækʃən/ us/ɛkstɹˈækʃən/
B2
英语
~ 8700
eltávolítás, foghúzás, kitermelés, származás, oldószeres extrakció, oldószeres kivonás
名词
B2
1
用法模式：
the extraction of [something] from [something]
The dentist recommended extraction of the damaged tooth.
A fogorvos a sérült fog kihúzását javasolta.
Oil extraction from the seabed has raised environmental concerns.
A tengerfenék alatti olajkitermelés környezetvédelmi aggályokat vetett fel.
The software allows easy extraction of text from PDF files.
Gold extraction from low-grade ore requires advanced technology.
The report describes the extraction of key data from thousands of surveys.
学习者例句
I had a tooth extraction last year.
Tavaly kihúzták az egyik fogamat.
Oil extraction can hurt the environment.
Az olajkitermelés károsíthatja a környezetet.
The program helps with the extraction of data from old files.
The company makes money from the extraction of gold from rock.
The scientist studied the extraction of sugar from plants.
常见错误：
Learners sometimes confuse the noun "extraction" with the verb "extract" and say *"I will extraction the tooth"* instead of "I will extract the tooth" or "I will have a tooth extraction." Another common mistake is leaving out the preposition "of" and saying *"the extraction sugar from plants"* instead of "the extraction of sugar from plants."
含义
act of removing something
搭配
tooth extraction
|oil extraction
|data extraction
|information extraction
|resource extraction
|wisdom tooth extraction
近义词
removal (Most general; can be physical or abstract, not limited to pulling out.)
|
withdrawal (Emphasizes taking something away from use or from a place; often more formal.)
|
pulling out (More informal and physical; focuses on the forceful action.)
反义词
insertion (Opposite physical direction: putting something in instead of taking it out.)
|
addition (Opposite result: adding something rather than separating or removing it.)
主题
science
|technology
|medicine
|core_vocabulary
释义
The act of taking something out from where it was before, often by pulling or separating it.
The act or process of removing something from a larger whole, place, or mixture, especially by pulling it out or separating it.
名词
C1
FORMAL
2
származás
B1
用法模式：
of [nationality / social-class] extraction
She is of Italian extraction, though she was born in Canada.
Olasz származású, bár Kanadában született.
His grandfather, of humble extraction, worked in the coal mines.
Nagyapja szerény származású volt, és a szénbányákban dolgozott.
Many scientists of Jewish extraction fled Europe during the war.
Despite his noble extraction, he lived a very simple life.
The writer, of mixed Asian and European extraction, often explores identity in her novels.
学习者例句
My teacher is of German extraction.
A tanárom német származású.
She is of humble extraction but is now very successful.
Szerény sorból származik, de ma már nagyon sikeres.
He is of Irish extraction on his mother's side.
They are of mixed extraction and speak several languages at home.
The king was of royal extraction.
常见错误：
Learners sometimes try to use "extraction" alone to mean "origin" (e.g. *"What is your extraction?"*), which sounds unnatural in modern English. It is normally used in the fixed formal pattern "of [X] extraction," as in "of French extraction" or "of humble extraction."
含义
family or ethnic origin
搭配
of French extraction
|of Irish extraction
|of mixed extraction
|of humble extraction
|of noble extraction
近义词
origin (Very close in meaning; more common and less formal in everyday English.)
|
background (Broad term for a person's past; includes more than just family or ethnic origin.)
|
heritage (Emphasizes cultural traditions and values passed down, not only where the family came from.)
主题
society
|identity
|relationships
|core_vocabulary
释义
Where a person's family comes from, especially their country, group, or social class, described in a formal way.
A person's family background, especially their ethnic, national, or social-class origin.
名词
C1
TECHNICAL
3
用法模式：
[type of] extraction of [substance] from [mixture]
Solvent extraction was used to separate the metal ions from the waste solution.
Oldószeres extrakciót alkalmaztak a fémionoknak a hulladékoldatból való elválasztására.
Liquid-liquid extraction can efficiently isolate caffeine from coffee beans.
A folyadék-folyadék extrakcióval hatékonyan izolálható a koffein a kávébabból.
The lab protocol describes the extraction of DNA from blood samples.
The plant specializes in uranium extraction from processed ore.
Sample preparation involves an extraction step followed by chromatographic analysis.
学习者例句
We did an extraction of caffeine in chemistry class.
Kémiaórán koffeinextrakciót végeztünk.
The scientist used solvent extraction to clean the sample.
A kutató oldószeres extrakciót alkalmazott a minta megtisztítására.
Extraction of DNA is the first step in this experiment.
Liquid-liquid extraction can move a chemical from water into another liquid.
Metal extraction from ore is important for industry.
常见错误：
Learners sometimes treat this technical sense as completely different from the general meaning, but it is just a more specific type of removal. Another mistake is saying *"extraction with water and oil"* without naming which is the solvent and which is the phase; in technical writing, you should be precise (e.g. "extraction of X from the aqueous phase into the organic solvent").
含义
chemical separation using solvent
搭配
solvent extraction
|liquid-liquid extraction
|metal extraction
|supercritical CO2 extraction
|protein extraction
|sample extraction
近义词
separation (General term; does not specifically imply using a solvent as extraction does.)
|
leaching (A related process, often in mining, but not identical; more specific context than extraction.)
反义词
mixing (Opposite operation: combining substances instead of separating one out.)
主题
science
|chemistry
|engineering
释义
In chemistry, a way to take one part out of a mixture by using a liquid that that part can dissolve in.
A separation process in chemistry or engineering in which one or more components are removed from a mixture by dissolving them in a suitable solvent.
语法
词典原形
extraction
IPA
GB/ɛkstɹˈækʃən/
US/ɛkstɹˈækʃən/
音节与重音
ex - trac - tion （3 个音节）
Stress on 2nd syllable (trac)
词形变化
Noun
- Base: extraction
- Plural: extraction, extractions
词族
Forms
extractions
noun
Core family
extract
verb B2
Related words
extractor
noun
extractable
adjective
Advanced or less common
extractive
adjective
相关表达
of French extraction
1/əv fɹˈɛnt͡ʃ ɛkstɹˈækʃən/
fixed phrase
formal
having French family origins
Having family roots or ancestors from France.
例句
- His grandparents were of French extraction, though the family later moved to Canada.
- She is of French extraction on her mother's side.
- Several ministers, many of French extraction, supported the policy.
of humble extraction
1/əv hˈʌmbəl ɛkstɹˈækʃən/
fixed phrase
formal
from a low social background
Coming from a poor or low social-class family, said in a formal way.
例句
- Born of humble extraction, she rose to become a leading politician.
- The hero, of humble extraction, struggles against the rigid class system.
- Many leaders of humble extraction used education to change their lives.
tooth extraction
1/tˈuθ ɛkstɹˈækʃən/
fixed phrase
dental removal of a tooth
the act of taking a tooth out of someone’s mouth, usually done by a dentist
例句
- The dentist said I might need a tooth extraction.
- The dentist said a tooth extraction was the only option.
- He was nervous about his upcoming tooth extraction.
- I was nervous about my wisdom tooth extraction next week.
- After the tooth extraction, you should eat only soft food.
- After the tooth extraction, you should not eat hard food for a few days.