の源

source of

→ の
phrase Rare #22,189
source of Used to describe the source or origin of something, often an abstract thing such as inspiration, power, energy, pain, or crime.
JA: 家族は私にとって幸せの源です。
EN: My family is a source of happiness for me.

思い出苦痛の源

Memories are a source of pain.

— カンフーハッスル (2004)

エネルギーの源

What is the source of the energy in the field?

— ザ・マン・フロム・アース (2007)

そのの源日本アルプス山中にある

The river's source is in the Japanese Alps.

彼らの生命の源なんだ

It's the source of their life.

— アトランティス 失われた帝国 (2001)

貧困犯罪の源という人もいる

Some people say that poverty is the root of crime.