名词
中文翻译：Unknown
同义词：
['national defense road', 'national defense route', 'national defense pathway']
例句：
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1. The national defense highway is a crucialpart of our country's infrastructure.
国家防御高速公路是我们国家基础设施的重要组成部分。
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2. The nationaldefense highway connects two major cities inthe country.
国家防御高速公路连接了该国的两个主要城市。
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3. The national defense highway isused by military vehicles to transport troops andsupplies.
国家防御高速公路被军事车辆用来运输军队和物资。