Generally speaking, it "s cheaper but slower to ship goods by sea than by rail."
总的来说，海运比铁路运输更便宜，但速度慢一些。
2
S. 's much more stringent planning process, and in part because of congressional hurdles, progress on high-speed rail here has been much slower.
美国高铁建设进程缓慢，一方面由于其严格的规划程序，另一方面是因为国会的阻拦。
3
In part because of the U.S. 's much more stringent planning process, and in part because of congressional hurdles, progress on high-speed rail here has been much slower.