4000 Duolingo Vocabulary List

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a. 생태 of or relating to the science of ecology; characterized by the interdependence of living organisms in an environment

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a. 효율 effective; acting directly to produce an effect; exhibiting a high ratio of output to input

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n. 노력 the exertion of strength or power, whether physical or mental, in performing an act or aiming at an object

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v. 유도 draw out; bring forth or to light;  generate or provoke as response or answer

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a. 어려운 difficult to describe; difficult to detect or grasp by the mind

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v. 등장 come into prominence; spring up; appear

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v. 신흥 위태롭게 activate; stimulate; make someone more likely to do something

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n. 기부 gift; donation; funds or property donated to an individual or group

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a. 정력 active; vigorous;  having or involving a lot of energy  

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a. 조명 담금질 precisely and clearly expressed; definite; outspoken