4000 Duolingo (E F) - Spelling Practices

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(1) n. 생태 a biologist who studies the relationship between organisms and their environment

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(2) a. 식용 eatable; the substance that can be used as a food

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(3) n. 제정 acting of a role or representation of a character in a play; passing of a law by a legislative body

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(4) n. 조각 the practice of incising a design onto a hard, flat surface by cutting grooves into it

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(5) n. 표피 an outer, protective layer of skin of vertebrates

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(6) n. 침식 corrosion; a gradual decline of something

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(7) n. 에티켓 manners; rules governing socially acceptable behavior

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(8) v. 외치다 cry out suddenly, as from surprise or emotion

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(9) n. 지출 payment or expense; output

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(10) a. 조명 담금질 precisely and clearly expressed; definite; outspoken