３０さんじゅう年ねん代だい

noun

the '30s; the thirties

Refers to the decade of a century, e.g., the 1930s. The century is usually clear from context.

• 彼かれは３０年ねん代だいの音おん楽がくが好すきだ。

  He likes music from the '30s.

• この建たて物ものは３０年ねん代だいに建たてられた。

  This building was built in the thirties.