Here's a good example of the Russian text https://github.com/deeponion/deeponion/blob/8110d65601b8aa99ea7253404d8ca7b1e62add57/src/qt/locale/bitcoin_ru.ts (deeponion/deeponion) Just go through each bit line by line and translate im Deutsch but also keep the english version in (incase of confusion). Or at least that's what it looks like to me