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external fixation
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External fixation is a surgical routine to set bone fractures in which a cast would not allow proper alignment of the fracture. In this kind of reduction, holes are drilled into uninjured areas of bones around the fracture and special bolts are screwed into the holes. Outside the body, a rod with special ball-and-socket joints joins the bolts to make a rigid support. The fracture can be set in the proper anatomical configuration by adjusting the ball-and-socket joints. ...
출처: en.wikipedia.org/wiki/External_Fixation
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extinction
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In biology and ecology, extinction is the ceasing of existence of a species or group of taxons. The moment of extinction is generally considered to be the death of the last individual of that species. Extinction is a natural phenomenon; it is estimated that 99.9% of all species that have ever lived are now extinct. ...
출처: en.wikipedia.org/wiki/Extinction
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extirpation
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Extirpation is the localized extinction of a species. This can be due to over-hunting, human development, climate change, or competition from introduced species. It is especially common on islands where only a small and therefore vulnerable, population may exist. Sometimes species are reintroduced to an area from which they were extirpated, although this may cause controversy as during the reintroduction of wolves to Yellowstone National Park. ...
출처: en.wikipedia.org/wiki/Extirpation
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external genitalia
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A sex organ, or primary sexual characteristic, narrowly defined, is any of those parts of the body (which are not always bodily organs according to the strict definition) which are involved in sexual reproduction and constitute the reproductive system in an complex organism; namely: * Male: penis (notably the glans penis and foreskin), testicles, scrotum, prostate, seminal vesicles, epididymis, Cowper's glands* Female: vulva (notably the clitoris), vagina (notably the cervix), labia ...
출처: en.wikipedia.org/wiki/External_genitalia
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extension
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The organization of a new Junior Chamber chapter.
출처: www.geocities.com/libertyjaycees/glossary.html
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