Former President Park Geun-hye, who made her long-delayed appearance at the prosecution Tuesday for face-to-face questioning, locked horns with investigators over the corruption allegations that led to her ouster from power earlier this month.
Seoul far behind major world cities in air quality
 Seoul’s air pollution Tuesday recorded the second most serious figure among major metropolitan areas worldwide, recent data showed.
* Metropolitan areas: 대도시지역
 The main cause of the pollution is the inflow of fine dust particles from outside of Korea, including those from eastern portions of China.
* Inflow: 유입
* Fine dust: 미세먼지
 “Fine dust from outside the country flowed in as the west wind blew when stationary high pressure was remaining in the sky,” said a National Institute of Environmental Research official. “The air condition of the entire capital area including Seoul was severe as the atmosphere stagnated.”
* National Institute of Environmental Research: 국립환경연구원
* Stagnated: 침체되다