abacus

算盘英释中释na frame with small balls that can be slid along on thick wires, used for counting and calculating

1 In English we call it an abacus..在英语里我们叫它为一个算盘。

2 I could write on paper and use abacus for statistic..我可以用纸笔写作，要算统计时就打算盘。

3 In response to declining math skills among their students, some Japanese schools are bringing back an ancient calculating device - the abacus..为了改善学生日渐衰退的计算能力，日本的一些学校重新使用起一个古老的计算工具-算盘。