For example, residents can make a point of airing out rooms facing north or south to reduce their habitual reliance on air conditioning. Before going to work, it's a good idea to draw window curtains to let direct sunlight kill germs and to open windows to let in the fresh air. Professor S.L.
比如，可以多利用南北向的房間開窗作息，逐漸改善依賴冷氣的習慣；上班出門前，拉開窗簾讓溫暖的陽光為室內殺菌，打開窗戶讓空氣流通……。