单词	abacus
释义	abacusabacus /ˈæbəkəs, əˈbæ-/ noun [countable] Etymology ETYMOLOGYabacus Origin: 1300-1400 Latin Greek abax flat piece of stone a wooden frame with small beads used for counting [Origin: 1300–1400 Latin, Greek abax flat piece of stone]
随便看	athletics athletic supporter -athon athwart -ation -ative Atlanta Atlantic Charter, the Atlantic Ocean, the at-large atlas Atlas Mountains, the ATM atman atmosphere atmospheric atmospheric convection atmospheric cycle atmospheric pressure atmospherics atoll atom atomic atomic bomb atomic energy

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