它使用本地化调用获取标签，__(\'IBAN\', \'woocommerce\'), 因此，您可以随时截取并更改文本：

/**
* filter translations, to replace some WooCommerce text with our own
* @param string $translation the translated text
* @param string $text the text before translation
* @param string $domain the gettext domain for translation
* @return string
*/
function wpse_77783_woo_bacs_ibn($translation, $text, $domain) {
    if ($domain == \'woocommerce\') {
        switch ($text) {
            case \'IBAN\':
                $translation = \'MICR\';
                break;

            case \'BIC\':
                $translation = \'IFSC\';
                break;
        }
    }

    return $translation;
}

add_filter(\'gettext\', \'wpse_77783_woo_bacs_ibn\', 10, 3);