Meaning of jiào xun:
教训
to provide guidance; to lecture sb; to upbraid
Lǎoshī gěi wǒ shàngle yī táng zhòngyào de jiàoxùn.
老师给我上了一堂重要的教训。
The teacher gave me an important lesson.
a talking-to; a bitter lesson; CL:番[fan1],頓|顿[dun4]
Tā cóng zhè cì cuòwù zhōng dédào le zhòngyào de jiàoxùn.
他从这次错误中得到了重要的教训。
He learned an important lesson from this mistake.
Tā cóng zhè cì shìjiàn zhōng huòdéle zhòngyào de jiàoxùn.
他从这次事件中获得了重要的教训。
He learned an important lesson from this incident.