对我来说这些冥想就像一条建筑工人吊的铅垂线—来检查墙壁是否垂直。

For me these meditations are like a plumb line dropped by a master builder - to see if the walls are straight or crooked.

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赫尔楼正在安装和检查调整，以中心线铅垂线。

Hull floors being fitted and checked for alignment with a centreline plumb line.

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当墙与铅垂线标准相一致时，木匠才满意，他说这才是对的。

when a carpenter is satisfied that the walls are straight and aligned with the standard of the plumb line, he says that they are “true.”

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