名词
中文翻译：Unknown
同义词：
['horseshoe tunnel', 'horseshoe tunnel例句：1. The horse-shoe tunnel is a popular attraction for tourists.（马蹄形隧道是游客们非常受欢迎的景点。）']
例句：
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1. The horse-shoe tunnel is a popular attraction for tourists.
马蹄形隧道是游客们非常受欢迎的景点。
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2.The construction of the horse-shoe tunnel has been completed.
马蹄形隧道的建设已经完成。
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3. The horse-shoe tunnel is an important transportation route.
马蹄形隧道是一条重要的交通路线。