用sci期刊的语言风格来润色这段英文：1 Closed environment Since subway stations rely only on inlet and outlet entrances and ventilation shafts to ventilate with the outdoor environment the station environment has a str

(1) The closed nature of subway station environments is due to their reliance on inlet and outlet entrances, as well as ventilation shafts for air exchange with the outdoor environment. (2) The regular flow of passengers, coupled with the presence of lighting and equipment, contributes to a significant amount of heat and pollutant generation within the station. (3) Due to the station's thermal inertia resulting from its soil coverage, dissipation of excess heat within a short period of time is challenging.