进行受精前用显微镜检查精子样本。
The sperm sample is checked under the microscope before insemination is carried out.
只需一个精子就可以使卵受精。
精子与卵子结合开始受精过程。
The sperm fuses with the egg to begin the process of fertilization.
男性每次射精的精液含多达三亿个精子。
当一个精子和一个卵子结合时受孕就发生了。
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.
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.
现在，一项人类研究发现了双酚A含量和男性精子质量之间有密切关联，结果并不乐观。
A human study has found strong links between BPA levels and semen quality, and the findings are not looking good.
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.
在排卵期、精子化期或自然退化期，性腺体积变小。
After ovulation, spermiation or natural degeneration, the volume of gonad was smaller in stage VI.
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.
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