masculine sterility

例句：

1. 1.The study of male sterility is crucial for understanding the causes of infertility in men.
   研究男性不育症对于理解男性不孕的原因至关重要。
2. 2.Male sterility can be caused by a variety of factors, including genetic and environmental factors.
   男性不育症可以由多种因素引起，包括遗传和环境因素。
3. 3.In some cases, male sterility may be due to an underlying medical condition that requires treatment.
   在某些情况下，男性不育症可能是由于一种需要治疗的底层医疗条件引起的。