object lesson

ریشه

The term 'object lesson' originated in the 19th century and combines the words 'object' (something tangible) and 'lesson' (a teaching or instruction).

مثال

• The science teacher used a simple experiment as an object lesson to explain the concept of gravity.
• The film serves as an object lesson on the consequences of greed.
• The coach used the team's loss as an object lesson in the importance of teamwork.