英语词汇on the level的起源、历史背景-英语词源词典

on the level. The phrases upon or on the level and by or on the square probably originated with the Freemasons in the 14th century. Freemasons, before they accepted honorary members several centuries later, were exclusively a class of skilled work- ers in stone who traveled from place to place wherever build- ings were being erected. From their use of the square, which drew a straight line and made you go straight, and their use of the level, which made sure a surface was true or even, came these expressions meaning honestly, truthfully, and on the up-and-up.

词汇	on the level
词源	on the level. The phrases upon or on the level and by or on the square probably originated with the Freemasons in the 14th century. Freemasons, before they accepted honorary members several centuries later, were exclusively a class of skilled work- ers in stone who traveled from place to place wherever build- ings were being erected. From their use of the square, which drew a straight line and made you go straight, and their use of the level, which made sure a surface was true or even, came these expressions meaning honestly, truthfully, and on the up-and-up.
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