What does “day by day” mean?

all the time; a little at a time and gradually

How is “day by day” used?

In Les Misérables: 25th Anniversary in Concert (2010), one line is: “The colours of the world are changing day by day Red,”

The clip at the top of this page is from Les Misérables: 25th Anniversary in Concert (2010).

The colours of the world are changing day by day Red,

8 作品で登場 · 1 本目