semen

例句：

1. 1. The male spermatozoon is responsible for fertilizing the egg.
   男性的精子负责使卵子受精。
2. 2. He has been trying to conceive a child for several years without success.
   他已经尝试了好几年没有成功怀孕。
3. 3. Semen analysis is an important part of fertility testing.
   精液分析是生育测试的一个重要部分。