名词
中文翻译：封闭的圆筒
同义词：
['block', 'obstruction', 'barrier']
例句：
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1.The car was blocked by a large tree.
汽车被一棵大树挡住了。
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2.The road is blocked due to the construction work.
由于施工工作，道路被堵塞了。
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3.The blockade was lifted after negotiations between the two countries.
两国之间的谈判后解除了封锁。