plumb bob
plumb bob — 名詞
1. a small heavy weight hung from a cord, used to check whether a wall, post, or su
垂球
吊在線上用來測量垂直的重錘
a small heavy weight hung from a cord, used to check whether a wall, post, or surface is exactly vertical
The carpenter hung a plumb bob beside the frame before fixing it in place.
木匠先在框架旁吊起垂球，確認位置後才固定。
hung a plumb bob to check alignment
A simple plumb bob showed that the garden post was leaning slightly.
一個簡單的垂球顯示花園柱子有點傾斜。
showed that the post was not vertical
The crew used a plumb bob to mark a straight vertical line down the brickwork.
施工團隊用垂球在磚牆上標出筆直的垂直線。
used a plumb bob to mark a vertical line
Before modern laser tools, builders often relied on a plumb bob and string.
在現代雷射工具出現以前，建築工人常靠垂球和線來測量。
traditional tool with string
- hang a plumb bob
- use a plumb bob
- plumb bob and string
- check with a plumb bob
- plummet
older or technical word for the same kind of hanging weight
- plumb line
the line and weight together, or sometimes the whole tool
文法句型
a plumb bob
hang a plumb bob
use a plumb bob to check + noun
用法筆記
A plumb bob is the weight at the end of a plumb line. The whole tool may also be called a plumb line in everyday use.
常見錯誤
Do not write 'plum bob' in technical writing; the building tool is spelled 'plumb bob'.
同根字
- plumb形容詞C2
- plumb line名詞C2
- plummet名詞C2