| 单词 | abacus |
| 释义 | abacus n. (pl. abacuses) 1. an oblong frame with rows of wires or grooves along which beads are slid, used for calculating. 2. Archit. the flat slab on top of a capital, supporting the architrave. Etymology: L f. Gk abax abakos slab, drawing-board, f. Heb. ' abak dust |
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