I assume that you know nothing, starting from ground zero here and build it up.

我假设你们什么都不知道，零起点，从头开始。

youdao

After losing his job in the small factory, my father set up his own business, starting from ground zero.

失去在小厂的那份工作后，我父亲创办了自己的企业，一切从零开始。

youdao

After losing his job in the small factory, my father set up his own business, starting from ground zero.

失去在小厂的那份工作后，我父亲创办了自己的企业，一切从零开始。

youdao