教训

❶lesson;moral
❷chide;teach sb a lesson;give sb a talking-to;lecture sb (for wrongdoing,etc);give sb a piece of one’s mind;give sb a dressing down
吸取～draw a lesson (or moral) from sth;take warning from sth/喜欢～人fond of lecturing others/历史的～lessons of history/血的～a lesson paid for with blood; lesson written in blood