When submitting a reference, you will be asked to indicate the language of the text if it is not in English. When submitting a non-English reference, you will be asked to upload an English translation. The translation file must include an English translation of the sections you have cited as relevant.
Please note that a US patent (or any patent in English) will not be accepted as a translation of a non-English non-US patent. Since the patents are filed in different patent offices, there may be differences in the text. One patent, therefore, is not an exact translation of its counterpart in another patent jurisdiction.