Si on permettait l'exportation de 50 000 litres d'eau dans sa forme naturelle, sans l'utilisation de pipelines, de canaux, de tunnels, d'aqueducs ou de conduits, je ne sais pas comment on pourrait assurer le transport de l'eau autrement que par son écoulement naturel.
If you were allowing the water in its natural state to leave the country in quantities of 50,000 litres, if you're not using a pipeline, canal, tunnel, aqueduct, or channel, I don't know how you would be transporting it other than through the natural flow.