似乎没有任何过滤器可以执行此操作，因此您需要将\templates\order\order-downloads.php模板文件复制到子主题文件夹中并进行修改到该文件的下一行.

There doesn't seem to be any filters to do that so you'd need to copy the \templates\order\order-downloads.php template file into your child theme folder and make modifications to the following line in that file.

case 'download-file':
    echo '<a href="' . esc_url( $download['download_url'] ) . '" class="woocommerce-MyAccount-downloads-file button alt">' . esc_html( $download['download_name'] ) . '</a>';
    break;