before-and-after test

基本解释

"before-and-after" test: An analysis of a country or region before and after the completion of a project.
“事前事后”试验：指在一个项目完成之前和完成之后，对一个国家或地区所作的分析。
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From the data statistics and analytical results of before-test and after-test, we found there were obvious and varied differences between them.
从前测、后测的数据统计与分析结果，我们发现前后测存在着极大的显著性差异。
In the case analysis, the study evaluates the staff's behavior in one department of BY corporation by before-after test and gets some significant conclusion.
在案例分析中，本研究运用前-后测的方法对BY公司某部门员工的行为层进行了评估，得到了一些有意义的结论。

Suppose you turn off your radio station a few seconds before 2pm and turn it back on a few seconds after the 30-second test concludes?
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To test these, she and her colleagues took blood samples before and after a half-hour procedure that involved both members of a couple watching a video of a breastfeeding mother, listening to a recording of a distressed newborn, and holding a doll which was draped in a blanket that had recently been worn by a real new-born baby.
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