无法直接设置此文本。但是，“清空垃圾”文本在显示之前通过翻译API运行。您可以劫持此翻译，用自己的字符串替换文本。

get_current_screen() 用于检查当前管理屏幕的post\\u类型，因此您可以确保只影响“任务”类型的屏幕。

add_filter( \'gettext\', \'override_empty_trash\', 50, 3 );

/**
 * Override the "Empty Trash" string on admin pages for a custom post type
 *
 * @param string $translated_text translation of $text from previous filter calls
 * @param string $text            original text string
 * @param string $domain          translation domain
 *
 * @return string|void
 */
function override_empty_trash( $translated_text, $text, $domain ) {

    // Skip all of these checks if not on an admin screen
    if ( is_admin() ) {

        if ( \'Empty Trash\' === $text ) {

            // get_current_screen returns info on the admin screen, including post_type
            $current_screen = get_current_screen();
            if ( \'my-post-type-slug\' === $current_screen->post_type ) {
                // Override the translation, but run the replacement through the translation API
                $translated_text = __( \'Empty Archives\', \'my-plugin-translation-domain\' );
            }

        }

    }

    return $translated_text;

}