TED演讲:男性避孕药会如何起效(3)
Men make a thousand sperm every second and to have an effective contraceptive, 每秒中,男性可生产出一千个精子,所以有效的避孕药 you need to get that level of sperm production down to one percent of its normal value. 必须把这个精子生产率降到正常值的1%。 The good news is, this is possible, almost. 好消息是,这是可以做到的,几乎可以。 The most studied approac...