할증extra charge; additional charge; premium; surcharge 급증rapid increase 증가growth; rise 증가량increased amount; multiplied amount 증가율growth rate 증감fluctuation 할증료extra charge; surcharge; premium 격증heavy swell 증가세growing trend 증강reinforcement; buildup

추진propulsion; pushing; driving 후진국underdeveloped country; less developed country 선진being advanced 선진국advanced country; developed country 직진straight movement 진로course 진출expansion 진학entrance to a higher education institution 진행progress 진행자host; emcee