这是一件复杂的事情……你可以做的是检查购物车项目的允许装运国家，显示错误通知，并避免在客户国家与所有其他产品变体的允许国家不匹配时结帐。

下面为您的其他产品变体定义允许的可发货变体ID（国际）和允许的基本国家代码：

add_action( \'woocommerce_check_cart_items\', \'check_cart_items_for_shipping\' );
function check_cart_items_for_shipping() {
    $allowed_variation_id = \'513\'; // Here defined the allowed Variation ID
    $allowed_country      = \'US\'; // Here define the allowed shipping country for all variations

    $shipping_country = WC()->customer->get_shipping_country();
    $countries        = WC()->countries->get_countries();

    // Loop through cart items
    foreach(WC()->cart->get_cart() as $cart_item ) {
        // Check cart item for defined product Ids and applied coupon
        if( $shipping_country !== $allowed_country && $cart_item[\'variation_id\'] !== $allowed_variation_id ) {
            wc_clear_notices(); // Clear all other notices

            // Avoid checkout displaying an error notice
            wc_add_notice( sprintf( __(\'The product "%s" can not be shipped to %s.\'),
                $cart_item[\'data\']->get_name(),
                $countries[$shipping_country]
            ), \'error\' );
            break; // stop the loop
        }
    }
}