I used to drink coffee day in, day out.

过去我每天喝咖啡。

You get fit by playing the game, day in, day out, morning, noon and night.

每日坚持做这项运动，你就会变得健壮。

I exercise day in, day out.

我每天都做锻炼。

Day in, day out, all I ever do is work.

一天又一天，我每天都在工作。

Same things, same people, day in, day out.

每天都是同样的事， 同样的人。