Vertaling van "blueberry plantation was flabbergasted to know someone had thought " (Engels → Frans) :

One person who had written a business plan to do a blueberry plantation was flabbergasted to know someone had thought of his idea and was making a viable business out of it.
L'auteur d'un plan d'affaires pour une plantation de bleuets a été renversé d'apprendre que quelqu'un avait déjà eu cette idée et avait mis sur pied une entreprise viable.