4000 B4 Unit 10

alive or having life

그만두다; to avoid doing it

많은; many of those things

검토; a formal inspection of it by people in authority

펼리한; useful

정교한; they know many things about the world

십년간; period of ten years

격리하다; to separate one person or thing from a group

똑바로; to stand up straight

할 보람 있는; it is important or useful