He has learnt his lesson: it doesn't pay to take bribes.

他得到了教训：受贿是没有好处的。

youdao

He learnt his lesson.

他得到了教训。

youdao

Steve, or whoever he was, obviously hasn't learnt his lesson.

BBC: Transcript: Cocaine: Alex James in Colombia

He learnt an invaluable lesson there, one that would become his guiding principle at Treasury - that to act too slowly may prove more costly.

BBC: Tim Geithner: What will be his legacy?