| 单词 | conservation |
| 释义 | conservation (once / 1009 pages) 1n 2n 3n Conservation is when you keep something from running out — whether it's plants, animals, or resources. Your new conservation project, "Save the Pigeons," might not catch on as quickly as you'd hoped. Conservation is closely related to preservation. Both are positive words that give an impression of care and attention. Your habit of never leaving the couch might sound more impressive if you refer to it as "energy conservation." WORD FAMILYconservation: conservationist, conservations, conservativist+/conservationist: conservationists/conserve: conservancy, conservation, conserved, conserves, conserving USAGE EXAMPLESMr. Qarau hopes that his conservation work will create a sustainable harvest, enabling Fijians to eat turtles again. New York Times(Jan 02, 2017) Goldmark also last month approved expanding nearby Devil’s Lake Conservation Area from 80 acres to 495 acres. Washington Times(Jan 02, 2017) We need political will, and the call to readers should be to support conservation action. Washington Post(Jan 01, 2017) 1 n the preservation and careful management of the environment and of natural resources 2Hypo|Hyper conservancy the official conservation of trees and soil and rivers etc. soil conservationprotection of soil against erosion or deterioration oil conservationthe conservation of petroleum resources water conservationthe conservation of water resources preservation, saving the activity of protecting something from loss or danger n an occurrence of improvement by virtue of preventing loss or injury or other change 3Syn|Hyper preservation advance, betterment, improvement a change for the better; progress in development n (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations Hypo|Hyper conservation of charge, conservation of electricity the principle that the total electric charge of a system remains constant despite changes inside the system conservation of energy, first law of thermodynamics, law of conservation of energythe fundamental principle of physics that the total energy of an isolated system is constant despite internal changes conservation of mass, conservation of matter, law of conservation of mass, law of conservation of mattera fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system conservation of momentumthe principle that the total linear momentum in a closed system is constant and is not affected by processes occurring inside the system conservation of parity, mirror symmetry, parity, space-reflection symmetry(physics) parity is conserved in a universe in which the laws of physics are the same in a right-handed system of coordinates as in a left-handed system principle a basic truth or law or assumption |
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