multiple fertilization造句

An additional advantage to parasitism is that the male s sperm can be used in multiple fertilizations, as he stays always available to the female for mating.
The drugs that carry the greatest risk of high-order multiple fertilizations are the injectable hormones known as human menopausal gonadotropins, or hMG, which are probably the drugs Nkem Chukwu took, although her doctor has not released that information.
It's difficult to find multiple fertilization in a sentence. 用multiple fertilization造句挺难的