单词	leach
释义	leachleach /liːtʃ/ (also leach out) verb [intransitive, transitive] Word Origin WORD ORIGINleach Origin: Old English leccan ‘to make wet’ Verb Table VERB TABLE leach Simple Form Present I, you, we, they leach he, she, it leaches Past I, you, he, she, it, we, they leached Present perfect I, you, we, they have leached he, she, it has leached Past perfect I, you, he, she, it, we, they had leached Future I, you, he, she, it, we, they will leach Future perfect I, you, he, she, it, we, they will have leached Continuous Form Present I am leaching he, she, it is leaching you, we, they are leaching Past I, he, she, it was leaching you, we, they were leaching Present perfect I, you, we, they have been leaching he, she, it has been leaching Past perfect I, you, he, she, it, we, they had been leaching Future I, you, he, she, it, we, they will be leaching Future perfect I, you, he, she, it, we, they will have been leaching Examples EXAMPLES FROM OTHER DICTIONARIES Nitrates from fertilizers leached into the rivers. EXAMPLES FROM THE CORPUS But, with heavier stocking, even grass leaches more nitrate. Constantly running water through gravel means that any hardness will be leached into the water. Drainage had already leached away much of the water resources of the Great Plains grain belt. Everything from erosion to leaching to iron rainstorms is possible, perhaps much more. For some minutes Harry sat extremely still to leach the sting. Heap leaching uses chemical solutions to dissolve gold from heaps of crushed ore. I would sweat so hard that my shirt collar turned white from the salt leached out from my body. Plastics not intended for food use vary: some may leach dye into the water, and some can be toxic. word sets WORD SETS► Earth Sciences avalanche, nounaxis, nouncatchment area, nouncrater, noundinosaur, noundivide, nounelement, nounextinct, adjectivegallery, noungeo-, prefixgeophysics, nounglacial, adjectiveglaciation, noungoldfield, nounlandslide, nounlandslip, nounleach, verbmagnetic pole, nounmagnitude, nounmantle, nounmeteorite, nounmolten, adjectivemother lode, nounnatural history, nounonyx, nounopal, nounozone layer, nounpaleontology, nounpitchblende, nounPleistocene, adjectivePliocene, adjectiveprimeval, adjectivequake, verbquake, nounrarefied, adjectiverock, verbscour, verbshock wave, nounslide, nounsoapstone, nounstony, adjectivestream, nounstrip mine, nounsubcontinent, nounsubterranean, adjectivesuperficial, adjectiveterrain, nounterrestrial, adjectivetremor, nounundercurrent, nounvolcanic, adjectivevolcano, nounvortex, nounwater table, noun Collocations COLLOCATIONS FROM THE CORPUSADVERB► out · Parker and Braden have developed soft acrylic materials where the plasticiser does not leach out, but these have other problems.· I would sweat so hard that my shirt collar turned white from the salt leached out from my body.· They leach out of rock varnish more rapidly than the less-soluble elements and their concentration thus decreases with time.· This will leach out the poisons of the raw pork sausage!· These needed several coats of polyurethane varnish to prevent the dye leaching out.· When rain water hits pyrite ore, it forms sulfuric acid, which leaches out copper and other metals.· This applies to mineral water as well - substances in the plastic bottle can leach out into the water.· In spite of these coverings, the drug may leach out. technical if a substance leaches or is leached from a larger mass such as the soil, it is removed from it by water passing through the larger mass:  The manufacturers say that there is no danger of the aluminium leaching into the water.
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