school of hard knocks idiom
逆境，艰苦生活的磨炼
If you learn something in the school of hard knocks, you learn it as a result of difficult or unpleasant experiences.
| 单词 | school of hard knocks |
| 释义 | school of hard knocks idiom 逆境，艰苦生活的磨炼 If you learn something in the school of hard knocks, you learn it as a result of difficult or unpleasant experiences. |
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