ruinasen

form-of imperfect plural subjunctive third-person

ruinarの三人称複数仮定法過去未完了形

English Meaning

third-person plural imperfect subjunctive of ruinar

Si los arquitectos no ruinasen el diseño, el edificio conservaría su encanto histórico.

もし建築家が設計を台無しにしなかったなら、その建物は歴史的な魅力を保ったでしょう。

If the architects had not ruined the design, the building would have preserved its historic charm.