名词
中文翻译：溃疡
同义词：
['crack', 'fissure', 'ulnar', 'ulnar nerve']
例句：
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1. He had a stomach ulcer that required surgery.
他有一个需要手术的胃溃疡。
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2. The doctor advised him to take care of his health and avoid stress.
医生建议他照顾好自己的健康，避免压力。
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3. The patient was given medication to help heal the ulcer.
病人被开了药来帮助愈合溃疡。