It was an object lesson in how to use television as a means of persuasion.

这是利用电视作为劝导方式的一个实例。

《柯林斯英汉双解大词典》

The healthcare summit was an object lesson.

医改峰会就如一堂实物教学课。

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Greece has become an object lesson for countries with overgrown deficits.

希腊对那些持有大量赤字的国家来说成为了反面教训。

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It was perhaps an object lesson in how to do it right this time.

FORBES: Target Teams Up With Neiman Marcus to Create a Holiday Sales Smash

For an object lesson in how popular cookies are, try setting your browser to refuse all cookies.

CNN: Guard your online privacy

It was also an object lesson in how even the most sincere, well-intentioned comment can suddenly plunge you into a debate.

NEWYORKER: The Next Crusade