名词
中文翻译：铅垂线
同义词：
['vertical line', 'plumb line']
例句：
-
1.The engineer used a plumb-bob to measure the height of the building.
工程师用铅垂线测量了建筑物的高度。
-
2.The construction crew was using a plumb-bob to ensure the walls were straight.
建筑工人正在使用铅垂线确保墙壁是直的。
-
3. The surveyor used a plumb-bob to check the accuracy of the survey data.
测量师使用铅垂线来检查测量数据的准确度。