国際 こくさい連合 れんごう人間 にんげん環境 かんきょう会議 かいぎだったら
kokusairengōningenkankyōkaigidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 国際連合人間環境会議

1. If it were the United Nations Conference on the Human Environment; If the United Nations Conference on the Human Environment had been

Tara Conditional