我是指南针、印刷术的后裔，我是圆周率、地动仪的子孙。

I was the compass, printing descendants, I was PI, children and grandchildren Seismoscope.

youdao

我是指南针、印刷术的后裔，我是圆周率、地动仪的子孙。

I was the compass, printing descendants, I was PI, children and grandchildren Seismoscope.

youdao