字幕列表 影片播放 自動翻譯 列印所有字幕 列印翻譯字幕 列印英文字幕 This is how the US Military is able to build a bridge across a river in just minutes. 這就是美國軍方如何能夠在短短几分鐘內建造一座跨河大橋。 When the military needs to get across a river or other body of water fast, 當軍隊需要快速穿越河流或其他水體時。 they call in a very special team who can build an IRB, or an improved ribbon bridge. 他們召集了一個非常特殊的團隊，可以建造一個IRB，或者一個改進的帶狀橋。 An IRB, which was designed by General Dynamics, consists of foldable, floating aluminum bays, 由通用動力公司設計的IRB由可摺疊的、漂浮的鋁製托架組成。 each of which is 22 feet long and weighs nearly 13,000 pounds, that are deployed into the water 每一個長22英尺，重近13,000磅，被部署到水中。 and connected together to create a bridge, not unlike a series of pontoon boats lashed together. 並連接在一起，形成一座橋，這與一系列的浮船拉在一起的情況並不一樣。 But unlike tied together boats, these floating bridges can support an amazing amount of weight. 但與綁在一起的船不同，這些浮動的橋可以支持驚人的重量。 IRBs have no problems with heavy vehicles like IRB對重型車輛沒有問題，如 fully loaded trucks or even the M1A2 Abrams Tank which weighs over 60 tons! 滿載的卡車，甚至是重達60多噸的M1A2艾布拉姆斯坦克。 But perhaps most importantly, the US Military can install an IRB in incredible time. If 但也許最重要的是，美國軍方可以在難以置信的時間內安裝一個IRB。如果 the conditions are right and the crew of engineers is well trained, they are able 如果條件合適，而且工程人員訓練有素，他們就能夠 to build an improved ribbon bridge that is 100 meters long in as little as 30 minutes! 在短短的30分鐘內建造一座100米長的改進型帶狀橋!