名词
中文翻译：肿瘤
同义词：
['neoplasm', 'growth', 'growth tumor']
例句：
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1. The doctor found a tumor in his leg.
医生在他的腿上发现了一个肿瘤。
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2. Tumors are often caused by viruses or chemicals.
肿瘤通常是由病毒或化学物质引起的。
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3. Early detection and treatment of tumors can significantly improve survival rates.
早期发现和治疗肿瘤可以显著提高生存率。