名词
中文翻译：Unknown
同义词：
['block', 'obstruction', 'obstacle']
例句：
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1. The counter block is designed to prevent the machine from moving forward.
这个反冲块的设计是为了阻止机器向前移动。
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2. The road was blocked by a large truck, preventing us from reaching our destination.
一辆大卡车堵住了路，使我们无法到达目的地。
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3. The engineer had to remove the blockage in the pipeline to ensure safe operation of the machinery.
工程师不得不清除管道中的障碍物，以确保机械设备的安全运行。