adding machine造句

1、We 've replaced the old adding machine with a computer.
我们用电脑取代了老式的加法计算器。

2、In the seventeenth century an adding machine was invented.
十七世纪时，加法机被发明了。

3、We've replaced the old adding machine with a computer.
我们用电脑取代了老式的加法计算器。