When a particular drug is taken by millions, some people may not respond in a predictable way, even though the drug has been tested.

当数百万人服用一种特定药物，有些人的反应可能不可预测，哪怕这种药物已经被测试过了。

youdao

The software has been tested for viruses.

这个软件已经过是否有病毒的测试。

《牛津词典》

The treatment has been tested on healthy fertile women under the age of 35.

这个疗法已对35岁以下能生育的健康妇女进行了试验。

《牛津词典》

The program has cost more than $700 million so far, but has only been tested over a 37-kilometer section.

VOA: standard.2010.04.21

Now this has been tested in lots of interesting ways.

关于这点，曾经做过很多有趣的实验。

耶鲁公开课 - 心理学导论课程节选

"The European missile defense proposal that the Russians are so concerned about has not been tested yet.

VOA: standard.2009.07.15

What they share is a commitment to country that has been tested and proved worthy.

WHITEHOUSE: Weekly Address: Tragedy at Fort Hood

In that time, our country has been tested in ways none of us could have imagined.

NPR: Text of Bush's State of the Union Address

It is a program that has been tested and has prevented missile strikes inside of Israel.

WHITEHOUSE: President Obama Signs US-Israel Enhanced Security Cooperation Act | The White House