| 释义 |
Related topics: Toolsˈplumb line noun [countable] TZa piece of string with a small heavy object tied to one end, used for measuring the depth of water, or for checking whether something such as a wall is built exactly upright 铅垂线，垂直线Examples from the Corpusplumb line• If any walls appear to lean, check by going back to the nearest upper window and drop a plumb line down.• But again, as with the lintels, the union did not allow the bricklayers to use a plumb line.ˈplumb line nounChineseSyllable Corpus object of a heavy small with tied a string piece |