But Mr Houston's narrative really gets going with the advent of the clockwork calculating devices in the 17th century.

但休斯顿先生的叙述真正随着 17 世纪发条计算设备的出现而开始。

It's not only an amazing calculating device, it's an amazing demonstration because you can see these tanks are labeled with things like savings or consumer demand.

它不仅是一个令人惊叹的计算设备，也是一个令人惊叹的演示，因为您可以看到这些储罐上贴有诸如储蓄或消费者需求之类的标签。