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哥达基线隧道全长57公里，它能让高速列车穿过阿尔卑斯山脉的核心地带。
The Gotthard base tunnel, 57 kilometres long, will carry high-speed trains through the heart of the Alps.
youdao
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哥达基线隧道全长57公里，它能让高速列车穿过阿尔卑斯山脉的核心地带。
The Gotthard base tunnel, 57 kilometres long, will carry high-speed trains through the heart of the Alps.
youdao