名词
中文翻译：指末端
同义词：
['knuckle', 'fingertip']
例句：
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1.The knuckle end of the story is that she was late for work.
故事的结尾是，她上班迟到了。
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2.I'll give you a knuckle end if you don't finish your homework on time.
如果你不按时完成作业，我会惩罚你的。
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3. The knuckle end of the problem is that we need more resources to solve it.
问题的症结在于我们需要更多的资源来解决它。