1. 函馆位于北海道西南部，面对津轻海峡，是在 19 世纪末作为与外国进行贸易的港口城市发展起来的。它是北海道的大门，通过青函隧道与本州相连。
Located in the southwest of Hokkaido and facing the Tsugaru Strait, Hakodate developed as a port town for trade with foreign countries at the end of the 19th century, and is a gateway connecting Hokkaido with Honshu by the Seikan Tunnel.
2. 它是世界上第二长的铁路隧道，仅次於日本的青函隧道。不过它的海底区段长达 24 英里（39公里）是全球最长的。
It is the second-longest rail tunnel in the world, with the Seikan Tunnel in Japan being longer, but the undersea section of 24 miles (39 km) is the longest in the world.
3. 先前的世界记录保持者是日本青函隧道，长度为53.86公里。
The previous world record holder was Japan's Seikan (Aomori-Hakodate) tunnel, which is 53.86 km long.
4. 据了解，目前世界已经启用的最长海底隧道日本青函海底隧道总长不过53公里，海底部分仅为23.3公里，英法海底隧道海底部分也不过37公里。
It is understood that the opening of the world's longest undersea tunnel has been Japan's Seikan tunnel total length of 53 km, however, is only 23.3 kilometers submarine part of the British submarine part of the Channel Tunnel, but is also 37 km.
5. 当今世界上已建造了许多海底隧道，著名的有青函隧道、英吉利海峡隧道等，还有许多海峡隧道正在修建或计划修建中，这些海峡隧道的修建积累了丰富的经验。
Many undersea tunels have been constructed in the world today, such as the famous Qinghan Tunnel in Japan, English Channel Tunnel etc. And many strait tunnels have been constructed and planned. Much experience is accumulated in these tunnels construction.
6. 火车穿过青函隧道。
The train went through Seikan Tunnel.