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单词 leach
释义
leach
verb[T]
environmentspecialized
uk
/liːtʃ/us
/liːtʃ/
[IorT]
When achemicalsubstanceleaches or is leached from amaterial,especiallysoil, it isremovedby theactionofwaterpassingthrough thematerial:
漂洗，过滤（尤指土壤）
Thecalcium,potassium, andmagnesiumionsare leached orwashedout of thetopsoilintolowerinaccessiblesubsoil.钙、钾和镁离子被滤出表层土壤流入低层土壤却无法被吸收。
[T]
Whensoil, etc. has been leached, it has hadchemicalsubstancesremovedfrom it:
（指土壤等）被漂洗，被过滤
Thesoilhas been soheavilyleached throughintensivefarmingthat it is nolongerfertile.过度耕作使养分大量流失导致土地贫瘠。
SMART Vocabulary: related words and phrases
Removing and getting rid of things
  • abandonment
  • banish
  • be scattered to the four windsidiom
  • bin
  • castsomeone/somethingaside/away/off
  • dumping
  • eradication
  • erase
  • erasure
  • evacuate
  • evacuation
  • exorcism
  • fling
  • scrape
  • shedding
  • shoo
  • shrug
  • shrugsomethingoff
  • shuck
  • sling
See more results »

You can also find related words, phrases, and synonyms in the topics:

Physical & chemical processes
Removing and extracting
(Definition ofleachfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

leach| American Dictionary

leach
verb[I/T]
us/litʃ/
(of asubstance) to come out of or beremovedfrom anothersubstance,esp.dirt, bypassingwaterthrough it
(Definition ofleachfrom theCambridge Academic Content Dictionary© Cambridge University Press)

Examplesofleach

leach
The lower unit is characterised by an average porosity of about 13% which is largely derived from vugs produced by leaching of replacement anhydrite.
From theCambridge English Corpus
The data may suggest that growing lowland rice during the wet season could reduce the amount of nitrate leached to the shallow aquifer.
From theCambridge English Corpus
Under such conditions, nitrate can be leached and can contaminate the shallow aquifer which is also a source of drinking water.
From theCambridge English Corpus
In fields with low erosion rates, there is little increase in leaching.
From theCambridge English Corpus
As the topsoil was removed, leaching increased by 40 per cent, on average, over the 30-year time horizon.
From theCambridge English Corpus
The lowest maize yield harvested in 1996/97 under sole maize was attributed to leaching and water logging due to excessive rainfall and lodging.
From theCambridge English Corpus
The leaching fraction of 0.2-0.3 was provided for all treatments during the course of the experiment.
From theCambridge English Corpus
The soil was then leached with 95 % ethanol to remove free salts, air-dried and passed through a 2-mm sieve.
From theCambridge English Corpus
Data were summarized as mean cumulative cation losses from leaching columns of each treatment after each leaching event.
From theCambridge English Corpus
The nitrates can be washed, or leached, out of the soil by rain into groundwater.
From theCambridge English Corpus
Heavily leached soils also have a tendency to be easily eroded as the water washes away soil particles quickly.
From theCambridge English Corpus
The farmer must try to prevent nitrates leaching through the soil, to limit the economic and environmental costs that this would generate.
From theCambridge English Corpus
From this time onwards, leaching and erosion of soil was severe, causing major alluviation of valleys.
From theCambridge English Corpus
In either case the toxic or radioactive waste is trapped in the solid, preventing it from leaching into the local water table.
From theCambridge English Corpus
The iron oxide presumably gets leached out from the surface of the cultivated land.
From theCambridge English Corpus
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/leach##
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更新时间：2024/12/28 0:27:10