提示：点击例句中的单词，就可以看到词义解释

People don 't use abacuses very much now .

现在人们已经不怎么使用算盘了。

Abacuses were invented by the chinese .

算盘是由中国人发明的。

Abacuses are so fast and accurate that people still use them today .

算盘如此快和准确以致于现在人们仍在使用它。