哈沙什解释说，沉管式的设计要求大部分的隧道建筑在干坞上，干坞漂浮并沉没在水里。

Hashash explains that the immersed-tube design requires largeportions of the tunnel to be built on a dry dock that is floated outinto the water and sunk.

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独特之处：“ 这是第一条置于水中的隧道，也是第一次采用盾构隧道的概念，”哈沙什告诉大众机械的编辑。

Why It's Unique: "This was the first tunnel goingunder a body of water, and it was the first time the shield tunnelingconcept was used, " Hashash tells PM.

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同时，欧洲能够从沙哈拉沙漠的发电厂获得大部分电力。

Europe, meanwhile, could get most of its electricity from plants in the Sahara desert.

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