名词
中文翻译：障碍
同义词：
['barrier', 'barrier', 'fence']
例句：
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1. The new road is a major barrier to traffic.
新路是交通的主要障碍。
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2. The fence was too high for the children to climb over.
篱笆太高，孩子们爬不过去。
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3. The police were using a barricade to block off the street.
警察正在使用路障封锁街道。