monospermism

例句：

1. 1. The study of monospermism is important for understanding the evolution of life on Earth.
   研究单核生殖对于理解地球上生命演化的重要性。
2. 2. In monospermism, only one sperm fertilizes an egg.
   在单核生殖中，只有一种精子使卵子受精。
3. 3.The monospermism of this species has led to its unique adaptations to its environment.
   这种物种的单核生殖特性导致了它对环境的特有适应。