Voice search engines are trained to recognise context and produce the most natural responses. These responses will be different in another language, or even in the same language but a different country. Word-for-word translation is never a good idea, and it becomes even more important in voice search translation to trans-create rather than translate literally. Voice search translation requires a specific set of translator skills, including localisation, trans-creation, and, in particular, an intrinsic knowledge of how things are said in everyday conversation.
In addition, the way we speak and ask questions changes over time. New words and expressions constantly appear in languages, while other phraseology becomes less used or outdated. Even in the same local area, language varies from one social group or community to another. Translators who work with voice search have to stay as current as possible and be aware of these variations.