1·It only takes one sperm to fertilize an egg.
只需一个精子就可以使卵受精。
—— 《柯林斯英汉双解大词典》
2·Each male ejaculation will contain up to 300 million sperm.
男性每次射精的精液含多达三亿个精子。
—— 《柯林斯英汉双解大词典》
3·The sperm sample is checked under the microscope before insemination is carried out.
进行受精前用显微镜检查精子样本。
—— 《柯林斯英汉双解大词典》
4·A female stores sperm and can determine the sex of each egg she lays by fertilizing it or leaving it unfertilized.
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。
5·Production of testicular output sperm and spermatic fluid is also larger in polygamous animals.
在一夫多妻的动物中,睾丸输出的精子和精浆的量也较大。