$domain = null, $locale = null, $subLocale = null) { $str = ""; $str .= $this->translator->trans($message, $arguments, $domain, $locale); $str .= "\n"; $str .= $this->translator->trans($message, $arguments, $domain, ! empty($subLocale) ? $subLocale : $this->subLocale); return $str; } ・・・ http://symfony.com/doc/current/cookbook/templating/twig_extension.html