名词
中文翻译：铅垂线
同义词：
['verticalline', 'plumb line', 'vertical axis例句：1. The engineer useda plumb line to measure the heightof the building.（工程师用铅垂线测量建筑物的高度。）2. The construction workers used aplumb line to level the floor.（建筑工人用铅垂线来平整地板。）']
例句：
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1. The engineer useda plumb line to measure the heightof the building.
工程师用铅垂线测量建筑物的高度。
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2. The construction workers used aplumb line to level the floor.
建筑工人用铅垂线来平整地板。
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3.The surveyor used a plumb lineto mark the center of the property.
测量师用铅垂线标记财产的中心。