before-and-after test

基本解釋

"before-and-after" test: An analysis of a country or region before and after the completion of a project.
“事前事後”試騐：指在一個項目完成之前和完成之後，對一個國家或地區(qū)所作的分析。
chinafanyi.com
From the data statistics and analytical results of before-test and after-test, we found there were obvious and varied differences between them.
從前測、後測的數(shù)據(jù)統(tǒng)計與分析結(jié)果，我們發(fā)現(xiàn)前後測存在著極大的顯著性差異。
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，本研究運用前-後測的方法對BY公司某部門員工的行爲層進行了評估，得到了一些有意義的結(jié)論。

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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