Plumb bob
01
铅锤, 垂球
a weight attached to a string or line used by plumbers and builders to establish vertical alignment and ensure accuracy in construction
例子
ChatGPT The construction worker used a plumb bob to ensure the wall was perfectly straight.
ChatGPT 建筑工人使用了一个铅锤来确保墙是完全垂直的。
The mason relied on a plumb bob to align the bricks accurately during the build.
泥瓦匠在建造过程中依靠铅锤来准确对齐砖块。
