单词	abacus
释义	abacus abacus /ˈæb.ə.kəs/ noun [C] ► F0 a square or rectangular frame holding an arrangement of small balls on metal rods or wires, used for counting or for doing calculationsThesaurus+: ↑Weighing, measuring and counting devices
随便看	duplex duplicate duplication duplicitous duplicity durability durable duration duress Durex durian during durum wheat dusk dusky dust dustbin dustbin bag dustbin liner dust bowl dustcart dustcloth duster dusting dust jacket

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