1.7英里长金门桥获得18亿房顶修缮

[牛河梁]

[cng]

Compared to the expenses on "high-speed rail" is it cheaper or more expensive?

[牛河梁]

Compared to the expenses on "high-speed rail" is it cheaper or more expensive?

这是维护。金门桥低科技。如果高铁建好以后，高科技维护成本只能更贵。500英里要5000亿维护不奇怪。