like two peas in a pod

Prepositional phrase

of two things

(simile, of two things) Very similar; a couple made for each other.

Japanese Meaning

非常に似通っている / お互いそっくりである / 切っても切り離せない関係である

Even after twenty years, the twins were still like two peas in a pod in both appearance and mannerisms.

20年経っても、その双子は容姿や仕草がまるで瓜二つだった。

Sense（1）

(simile, of two things) Very similar; a couple made for each other.