一旦您获得产品变体ID $variation_id，就可以通过以下方式轻松完成此操作：

// Initializing
$variation_sku = '';

// Get the product variation object (instance)
$variation = wc_get_product( $variation_id );

// Loop through variation attributes "taxonomy" / "terms" pairs
foreach( $variation->get_variation_attributes() as $attribute => $value ){
    $taxonomy = str_replace( 'attribute_', '', $attribute );
    $term = get_term_by( 'slug', $value, $taxonomy );
    // $term_name = $term->name;
    $variation_sku .= $term->description; // <= HERE the Description
}
// Displaying the sku
echo '<p>'.__("SKU: ").$variation_sku.'</p>';