男性每次射精的精液含多达三亿个精子。
雌性储存精子，可以通过受精或不受精来决定每一个卵细胞的性别。
A female stores sperm and can determine the sex of each egg she lays by fertilizing it or leaving it unfertilized.
在这种蝴蝶卵上，花边图案标记精子进入的卵孔。
On this butterfly egg, the lacy pattern marks the micropyle, where sperm enters.
访谈显示，那些精子质量高的男士吃明显更多的水果和蔬菜。
Interviews revealed that the males with good semen quality ate significantly more fruits and vegetables.
在北美，南美以及其他一些地方生产的精子和克隆动物胚胎，其在国际范围内的交易已经无法加以有效监管。
The international trade in semen and embryos from cloned animals created in north and south America and beyond was effectively impossible to police.
在一夫多妻的动物中，睾丸输出的精子和精浆的量也较大。
Production of testicular output sperm and spermatic fluid is also larger in polygamous animals.
目的是评估精子运动学参数在豚鼠精子过度激活中的作用。
The objective is to evaluate the role of sperm kinematic parameters in the hyperactivation of Guinea pig spermatozoa.
目的是评估精子运动学参数在豚鼠精子过度激活中的作用。
The objective is to evaluate the role of sperm kinematic parameters in the hyperactivation of Guinea pig spermatozoa.
应用推荐