https://dl.lwltv.com/subjects/436357536480821247 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. https://dl.lwltv.com/subjects/436357536480821247 https://img.lwltv.com/fVz7MDWnELR0dnj1BU_nnUBVbtw=/144x0/images/rLSAXi4ffMnd2tfN1h7UugQRzK8.jpg 144 zh-cn 180 LWLDL RSS Generator 1.0