It seems simple: an egg + sperm = one embryo. But if your sperm is "few, vague and abnormal" and your woman is premenopausal at age 37, things start to get complicated.
吉姆·加菲根,蕾亚·塞洪,凯特琳·内肯,Mike Gaffigan,Patrick Gaffigan,Willoughby Pyle,Levi James Chapin,William J. Tully,Desmond Joseph Conrad-Fern,杰·沃克,马德琳·韦斯特·杜乔夫尼,加布里埃尔·拉什,Lynda Suarez,迈克尔·伊恩·布莱克,伊丽莎白·亨利,Shona Tucker,Jordan Drake,Thomas Schutz,艾米·哈格里夫斯,Roger Hendricks Si