How to overwrite built-in translation

You may need to change built-in translation via a module. You could be done via data xml files by calling _set_ids method. For example, for menus it could look as following:

<function
    model="ir.translation"
    name="_set_ids"
    eval="('ir.ui.menu,name', 'model', 'ru_RU', [ref('project.menu_main_pm')], 'Проекты Компании', 'Project')"/>