변경change; alteration 변동change; fluctuation 변화change 가변variability 가변성variability; changeability 가변적being variable 가변적changeable; changing; variable 개변change; reformation; renovation 격변sudden change; rapid change; violent upheaval; cataclysm 격변기period of upheaval

중심center 인심human nature; heart 민심public sentiment 결심decision; resolution; determination 관심interest; attention 점심lunch 점심시간lunchtime 조심caution; carefulness 중심center 핵심key; core; center