"Constant switching" refers to the act of frequently changing between different tasks, activities, or things without staying focused on one for a long time. Full definition
So just an overview of the perks of the NxGen design, the nipples are meant to facilitate constant switching between breast and bottle, while the air valve to help with gas or spit up problems are placed at the bottom. (followmum.com)
The name, Masuda explained, was derived from an analysis of football, which is characterized by fluid, constant switching of positions. (gamedynamo.com)
The ways in which characters can tie attacks together is left extremely open; the battle system allows constant switching from light attacks to heavy attacks, with mixups of subweapons and magic thrown inbetween. (crunkgames.com)