在汤姆的建议下，我设法把它修好了。这就是我尝试的解决方案。

function product_perma_Rewrite() {

    $prodCat = [\'taxonomy\' => \'product_cat\'];
    $categories = get_categories($prodCat);
    $catSlug = [];
    foreach($categories as $category) {
        $catSlug[] = $category->slug;
    }
    
     add_rewrite_rule(
        \'^(\'.implode(\'|\', $catSlug).\')/([^/]+)/comment-page-([0-9]{1,})/?$\',
        \'index.php?post_type=product&category=$matches[1]&product=$matches[2]&cpage=$matches[3]\',\'top\'
    );
    
    add_rewrite_rule(
        \'^(\'.implode(\'|\', $catSlug).\')/([^/]*)/?\',
        \'index.php?post_type=product&category=$matches[1]&product=$matches[2]\',
        \'top\'
    );
    
    flush_rewrite_rules();
}
add_action(\'init\', \'product_perma_Rewrite\');