Going up and down; ascent and descent — movement of people or things up and down (e.g., elevators, stairs).
毎朝、階段の昇降で軽く運動している。
Every morning I get light exercise by going up and down the stairs.
飛行機は荒天のため、頻繁に昇降を繰り返した。
Due to bad weather, the plane repeatedly ascended and descended.
駅の昇降客数がラッシュ時に急増した。
The number of passengers getting on and off at the station surged during rush hour.