尽管如此，航空旅行仍是最安全的交通形式。
Nevertheless, air travel is still the safest form of transport.
同时你还有研究其他的交通形式，包括火车，飞机和船。
And you'll study other forms of transportation, including trains, planes, and ships.
其他交通形式也很容易找到，但是适合长途旅行的需要。
It's easy to go long distance, or even short-distance, but on-campus parking is terrible.
应用推荐