| 单词 | square staff | 
| 释义 | > as lemmassquare staff   square staff  n. square staff   square staff  n. ΚΠ 1842    J. Gwilt Encycl. Archit. Gloss. 1036  				Square Staff, a piece of wood placed at the external angle of a projection in a room to secure the angle. < as lemmas | 
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