A runoff election is supposed to be held two weeks after the final results are certified.

VOA: standard.2009.09.16

in the next month or so, I'll be certified as a climbing guide,

大概下个月，我能拿到攀岩导游执照，

拍照的理由 - SpeakingMax英语口语达人

And I talked about eradicating smallpox in 1977, right when officially the last case was reported, and it was certified to be eradicated shortly after that.

我刚刚已经讲了一九七七年根除天花,当时发布了最后一例官方报告,自此之后,天花已经确认根除

耶鲁公开课 - 生物医学工程探索课程节选

So they kept track of country-by-country, when cases of smallpox occurred, and as it was eliminated from regions of the country, they then certified those regions to be smallpox free.

它跟踪调查了一个又一个国家,记录天花在这个国家中何时发生,又是何时清除的,并确证这个区域已经没有天花

耶鲁公开课 - 生物医学工程探索课程节选

None of you got smallpox vaccinations, because once a country was certified to be smallpox free, there was no reason to-- there was no reason to vaccinate people any longer.

你们当中没人接种过天花疫苗,因为一旦一个国家确认不再有天花,就没有理由,就没有理由再给人们接种

耶鲁公开课 - 生物医学工程探索课程节选