名词
中文翻译：Unknown
同义词：
['azoospermia', 'infertility']
例句：
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1. The couple's infertility was a major concern for them.
这对夫妇的不育问题对他们来说是个主要担忧。
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2. He had been suffering from infertility for several years.
他患有不育症已经好几年了。
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3. Infertility is a common cause of miscarriage and stillbirth.
不育症是流产和死胎的常见原因。