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Buenos dias, el texto que quisiera traducir es un trozo de un contracto de arrendamiento financiero (en francès, un contrat de crédit-bail), entonces es vocabulario juridico.
Me parecia que "a expensas de" significaba "aux dépens de", mais alors je ne comprends plus.

Je remercie ceux qui auront la gentillesse de m'apporter leur traduction.
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Admin's note : A translation request into English was made by the expert in French, in order to evaluate the translation that was done into French from this text. SO PLEASE TRANSLATE FROM SPANISH INTO ENGLISH, BUT DO NOT TRANSLATE FROM THE FRENCH VERSION, THANK YOU!(09/30/francky)