<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def translation(language):
 """ Return a translation object in the default 'django' domain. """

    global _translations
    if language not in _translations:
        _translations[language] = Translations(language)
    return _translations[language]