名词
中文翻译：阻塞
同义词：
['blockage', 'impediment', 'hindrance']
例句：
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1.The road was obstructed by a large tree.
一条道路被一棵大树阻挡了。
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2.The construction project has caused significant obstructions to traffic.
这个建设项目已经对交通造成了重大阻碍。
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3. The river's flow is frequently obstructed by rocks and debris.
河流的流动经常被岩石和碎片所阻碍。