名词
中文翻译：Unknown
同义词：
['speedway', 'expressway']
例句：
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1. The new high-speed railway line connects two major cities.
新的高速铁路线连接了两个主要城市。
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2. The expressway is the fastest way to travel between the two cities.
高速公路是两个城市之间最快的旅行方式。
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3. The construction of this spur-line will greatly improve transportation efficiency.
这条高速铁路线的建设将大大提高交通效率。