代码：

/**
 * Displays the site description.
 *
 * @param boolean $echo Echo or return the html.
 *
 * @return string $html The HTML to display.
 */
function twentytwenty_site_description( $echo = true ) {
	$description = get_bloginfo( 'description' );

	if ( ! $description ) {
		return;
	}

	$wrapper = '<div class="site-description">%s</div><!-- .site-description -->';

	$html = sprintf( $wrapper, esc_html( $description ) );

	/**
	 * Filters the html for the site description.
	 *
	 * @since Twenty Twenty 1.0
	 *
	 * @param string $html         The HTML to display.
	 * @param string $description  Site description via `bloginfo()`.
	 * @param string $wrapper      The format used in case you want to reuse it in a `sprintf()`.
	 */
	$html = apply_filters( 'twentytwenty_site_description', $html, $description, $wrapper );

	if ( ! $echo ) {
		return $html;
	}

	echo $html; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}

// Site description.
twentytwenty_site_description();?>

对应html

<div class="site-description">又一个WordPress站点</div>