https://cn.vogon.today/%e9%96%8b%e5%a7%8b%e9%9b%9c%e8%aa%8c/gualtieri%e8%a1%a8%e7%a4%ba%e8%82%af%e5%ae%9a%e7%9a%84%e6%88%90%e6%9c%ac/
Gualtieri表示肯定的成本