object lesson

音标发音

"But it is an object lesson about reading the terms and conditions, " he added.
“但是這是一個閲讀用戶說明的實際教訓。” 他補充道。
His obedience is now double-minded - and he provides a profound object lesson in what happens when we try to serve two masters.
他此時的順服已經三心二意了 - 彼得給我們上了有深刻意義的一課，告訴我們，侍奉兩個主人時，就會發生的事。
If you must hold yourself up to your children as an object lesson (which is not at all necessary), hold yourself up as a warning and not as an example.
如果你必須要把自己看成是孩子的實物教材（其實根本沒有必要），那就把自己儅成是孩子的一個警示吧，而竝非是範例。

It was perhaps an object lesson in how to do it right this time.
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This would be an object lesson to states harboring terrorists: Cross the civilized world, and you will be punished.
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It was also an object lesson in how even the most sincere, well-intentioned comment can suddenly plunge you into a debate.
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an action or story that teaches you how or how not to act, or that clearly shows the facts of a situation, usually a bad one

If you describe an action, event, or situation as an object lesson, you think that it demonstrates the correct way to do something, or that it demonstrates the truth of a particular principle.