New modeling research suggests that implementing a voluntary "test and treat" approach could dramatically reduce new HIV cases beginning within a decade and ultimately halt the pandemic.

新的模型测试显示，实施自愿的“检测及治疗”方法可以在10年之内大幅减少HIV感染病例，并且最终会使病毒流行中止。

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With our help, nearly every state has set higher academic standards for public schools, and a voluntary national test is being developed to measure the progress of our students.

CNN: Prepared Text of Clinton's State of the Union speech

Thanks to the actions of this Congress last year, we will soon have for the very first time a voluntary national test based on national standards in fourth grade reading and eighth grade math.

CNN: State Of The Union

Sohn said the effort will be a significant test whether voluntary measures can reduce copyright infringement.

NPR: Music, Movie Industry To Warn Copyright Infringers