But it was not until nineteen ninety-three that the problem was completely solved using corrective mirrors.

VOA: special.2009.09.30

So just one after another they made these insane departures from the corrective devices d put in the last time we had a big trouble and they really worked quite well.

因此，它们一个接一个地背离了,上一次金融危机时,采用的矫正手段，we’,并且这些手段是有帮助的。

斯坦福公开课 - 经济学课程节选

Three areas still had overfishing, but corrective measures have begun.

VOA: special.2009.09.08

"I want specific recommendations for corrective actions to fix what went wrong.

VOA: standard.2010.01.05