You haven't made a single sale in the past 3 weeks.

过去的三个星期里，你一笔销售业务也没有做成。

It would do this by replacing the many different taxes levied by individual states with a single sales tax.

通过将单一营业税取代各州各种不同的税收来实现这一目的。

“My income for the whole year is completely dependent on this single sale, it can't go wrong, ” Mu said.

“我全年的收入完全依赖于这一单销售，它可不能出错。”