505米长的这条大隧道是那个综合体最宏伟的部分。

This big tunnel with the length of 505 meters is the most magnificent part of that complex.

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在许多隧道工程中，经如辛普龙大隧道，都要在隧道全面开挖前打一个导洞。

In many projects, like the Simplon, for example, a small pilot tunnel is driven before the full diameter of the tunnel is excavated.

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她曾横跨大西洋，偶然地通过了大隧道，并且喜爱威尼斯，每年都去那里旅游。

I leaned that she crossed the Atlantic as casually as the Channel, and adored Venice, which she visited every year.

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