名词
中文翻译：公里石
同义词：
['milestone', 'milestone marker']
例句：
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1.The construction of the new highway has brought us a kilometer stone closer to our goal.
新高速公路的建设使我们离我们的目标更近了。
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2. The team decided to mark the kilometer stone with a plaque honoring their achievements.
团队决定在公里石上刻上一块纪念牌，以表彰他们的成就。
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3. As we approach the kilometer stone, we can see the progress being made in the construction of the new bridge.
当我们接近公里石时，我们可以看到在新桥建设中取得的进步。