Uncertified alterations or erasures shall invalidate the certificates.

证书未经证明而涂改应属无效。

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The ultimate manufacturer may not realize the ingredients came from an uncertified chemical company.

使用药物成分的生产企业可能就无法知道这些药物成分来自未经审计的化工厂。

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"Often enough our faith beforehand in an uncertified result is the only thing that makes the result come true" (William James).

“我们对未经证实的结果事先所抱的信念经常是使该结果成为现实的唯一因素”(威廉姆·詹姆斯)。

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One of the most serious issues is the shortage of well-qualified teachers, which is forcing many school districts to hire uncertified or underqualified people.

FORBES: Magazine Article

The IRS doesn't require paid preparers to register or meet any education standards, and doesn't even know how many unlicensed, uncertified and unregistered tax pros are out there.

FORBES: Who Does Your Taxes?

Last month, final uncertified results showed Karzai with 54 percent.

CNN: Karzai accepts Afghanistan election runoff