名词
中文翻译：黑结
同义词：
['black lump', 'black tumor']
例句：
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1.The doctor found a black knot on his neck.
医生在他的脖子上发现了一个黑色的肿块。
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2.The patient had a black knot removed from her arm.
病人从她的手臂上取出了一个黑色的肿块。
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3. The black knot was suspicious and required further investigation.
这个黑色的肿块引起了怀疑，需要进行进一步的调查。