semen dilution rate

例句：

1. 1. The study of spermatozoa is crucial for understanding the fertilization process in mammals.
   研究精子对于理解哺乳动物的受精过程至关重要。
2. 2.The semen dilution rate isa critical factor in determining the success ofartificial insemination.
   精液稀释率是决定人工授精成功率的关键因素。
3. 3. Insome species, the semen dilution rate can vary significantly between males andfemales.
   在某些物种中，雄性和雌性之间的精液稀释率可以显著不同。