Refers to gradual, natural change over time, especially of seasons, eras, or circumstances. Often implies a continuous, flowing transformation rather than an abrupt switch.
I feel the changing of the seasons.
時代の移り変わりとともに、人々の価値観も変わる。
As times change, people's values also change.
Looking out the window, I feel the changing of the times.
Trends have been changing very rapidly lately.
In this photo collection, you can see the transformation of the town over time.