spermatoon

例句：

1. 1. Spermatozoa are the cells that make up a spermatozoon.
   精子是构成精子细胞的细胞。
2. 2.In fertilization, the spermatozoon enters the egg to complete the process of conception.
   在受精过程中，精子进入卵子以完成受精过程。
3. 3. The study of spermatozoa has led to important breakthroughs in reproductive biology.
   对精子的研究已经导致生殖生物学的重要突破。