名词
中文翻译：挡板
同义词：
['barrier', 'partition', 'fence例句：1. The block sheave is designed to prevent the passage of objects through the opening.（这个挡板设计用来阻止物体通过开口。）']
例句：
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1. The block sheave is designed to prevent the passage of objects through the opening.
这个挡板设计用来阻止物体通过开口。
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2. The construction workers used a block sheave to secure the wooden beams.
建筑工人用一个挡板来固定木梁。
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3.The block sheave was an essential part of the old-fashioned fence.
这个挡板是老式篱笆的重要组成部分。