Translating estimates and invoices

Is there any way to make some advanced invoice template modifications in order to translate strings to another language or at least to translate exported PDF estimate or invoice? I can now translate exported PDFs with a 3rd party PDF tool but it's not really convenient since changes are not permanent (in case I loose manually translated PDF file I'd have to export invoice and translate it again).
Having an option to change default strings such as "Grand total (%currency%)", "Subtotal", "Bill to" etc. would be an awesome addition to already awesome app.
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no there's not a way to translate the rest of the components
hoping we might see more customizable options in the future, fingers crossed! 
Is it possible to add a second file, a translated version of the invoice, when sending invoicees?
Hi @chox, @QI Strothmann and @Mark.
That's right, Wave currently doesn't support other languages than English, and your only option for now is to customize what you can on the invoice customization page. I understand that this isn't an ideal solution, it is just a workaround and that can be frustrating.