piece by piece

Phrase

By completing each component gradually and in stages.

Japanese Meaning

一部ずつ、段階的に実施すること / 部分ごとに少しずつ進める様子 / 少しずつ、順を追って行うこと

We rebuilt the old boat piece by piece until it looked brand new.

古いボートを部品ごとに少しずつ修復して、見た目が新品のようになった。

Sense（1）

By completing each component gradually and in stages.

Rather than tackling the entire project at once, work on each assignment piece by piece.