What would then happen is that the European Union would claim to have reduced its pollution, reduced its emissions, but at a cost: firstly European jobs would be lost and secondly the world would not have reduced its pollution levels by one iota: the pollution would simply have been exported.
Ce qui se passerait alors, c'est que l'Union européenne affirmerait avoir réduit sa pollution et ses émissions mais le coût en serait primo, la perte d'emplois européens et secundo, que le niveau de pollution mondial n'aurait pas diminué d'un iota : simplement, la pollution aurait été exportée.