cimentaban

form-of imperfect indicative plural third-person

cimentarの三人称複数未完了直説法

English Meaning

third-person plural imperfect indicative of cimentar

Los ingenieros cimentaban un imponente monumento en el centro histórico de la ciudad.

技術者たちは、その都市の歴史的中心部で堂々たる記念碑の基礎を築いていた。

The engineers were laying the foundations of an imposing monument in the historic center of the city.