one by one

Upon their arrival, Álvarez León and his family sat by the water, unpacking the offerings one by one.

Over almost an hour, he took aim at his opponents and their ideas, picking them off one by one as he toured the world.

Once all the defendants' lawyers have taken their turns to speak, the justices will cast their votes one by one.

The justices will then cast their votes one by one.

But his various assistants gradually peel off one by one and head back to the US as they realise Kelly is serious about potentially giving up his career.