名词
中文翻译：凹入式路障
同义词：
['recessed barrier', 'recessed post']
例句：
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1.The recessed bollards are designed to prevent vehicles from driving into the sidewalk.
这些凹入式路障的设计是为了防止车辆驶入人行道。
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2.The construction crew had to remove the recessed bollards before they could start work on the new road.
施工队在开始新道路工程之前，必须先移除这些凹入式路障。
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3. The city council decided to replace the old recessed bollards with modern ones to improve safety.
市议会决定用现代的凹入式路障来提高安全性。