https://www.quora.com/During-WWII-a-some-countries-produced-one-man-chariots-a-sort-of-single-occupant-underwater-transportation-device-were-these-considered-to-be-submarines-or-manned-torpedoes
巴哈姆特提醒您，不明連結可能包含惡意程式
我已經知道風險，以後不要再提醒我了