名词
中文翻译：通过的杰克
同义词：
['through bar', 'through hinge']
例句：
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1.The engineer designed a through jack to help the workers move heavy equipment through the tunnel.
工程师设计了一种通过式千斤顶，帮助工人将重型设备穿过隧道。
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2. The through jack was essential for getting the materials across the river without damaging them.
通过式千斤顶对于在不损坏材料的情况下渡过河流至关重要。
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3. The construction crew used the through jack to lift the heavy beams over the obstacle course.
建筑工人使用通过式千斤顶将重梁抬起越过障碍赛道。