All had been evaluated using a slower but highly accurate test called real-time reverse transcription-polymerase chain reaction, or rRT-PCR, which checks for the genetic material of the virus.

应用一种缓慢但高度准确的试验，检测病毒的基因物质，叫即时逆转录-聚合酶链反应，或是rRT - P CR，全部做了评价。

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Lack of preparation can cause test anxiety or make it worse, but for many people test anxiety occurs regardless of preparation or knowledge of the material.

有时，对考试准备不足会导致考试焦虑或者加剧考试焦虑，但对很多人而言，不论准备做得怎样，知识掌握得如何，都会有考试焦虑。

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While at the same time as I say congratulations, I want to remind you that I think it comes as no surprise given the lateness of Labor Day this year that this first test came rather early and for many of you much of this material you had seen in high school.

当我对你们表示祝贺的同时，我也想提醒你，今年晚来的劳动节,并非是什么惊喜,第一个测试来的比较早,你们中的绝大多数在高中已经见过了。

麻省理工公开课 - 固态化学导论课程节选

Several companies in America scan their employees' e-mail for unpleasant or disloyal material, or test them to see if they have been taking drugs.

ECONOMIST: Doing well by doing good

Each one, Vogt said, is like a Rorschach test for the theorists, offering plenty of ways to look at this brand-new material and many new thoughts on the origins of the stars, their planets, their orbits and their life spans.

CNN: Astronomers spy new neighbors outside solar system